[Variadic] Moves .c tests into .i when possible

src/plugins/variadic/tests/declared/oracle/empty-vpar-with-ghost.res.oracle

-[variadic] tests/declared/empty-vpar-with-ghost.c:1: 
+[variadic] tests/declared/empty-vpar-with-ghost.i:1: 
   Declaration of variadic function f.
-[variadic] tests/declared/empty-vpar-with-ghost.c:8: 
+[variadic] tests/declared/empty-vpar-with-ghost.i:8: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel] tests/declared/empty-vpar-with-ghost.c:8: Warning: 
+[kernel] tests/declared/empty-vpar-with-ghost.i:8: Warning: 
   No code nor implicit assigns clause for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/empty-vpar.res.oracle

-[variadic] tests/declared/empty-vpar.c:1: Declaration of variadic function f.
-[variadic] tests/declared/empty-vpar.c:8: 
+[variadic] tests/declared/empty-vpar.i:1: Declaration of variadic function f.
+[variadic] tests/declared/empty-vpar.i:8: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel] tests/declared/empty-vpar.c:8: Warning: 
+[kernel] tests/declared/empty-vpar.i:8: Warning: 
   No code nor implicit assigns clause for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/function-ptr-with-ghost.res.oracle

-[variadic] tests/declared/function-ptr-with-ghost.c:4: 
+[variadic] tests/declared/function-ptr-with-ghost.i:4: 
   Declaration of variadic function va_f.
-[variadic] tests/declared/function-ptr-with-ghost.c:2: 
+[variadic] tests/declared/function-ptr-with-ghost.i:2: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/function-ptr-with-ghost.c:2: Warning: 
+[kernel:annot:missing-spec] tests/declared/function-ptr-with-ghost.i:2: Warning: 
   Neither code nor specification for function va_f, generating default assigns from the prototype
 [eva] using specification for function va_f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/label.res.oracle

-[variadic] tests/declared/label.c:4: Declaration of variadic function f.
-[variadic] tests/declared/label.c:8: 
+[variadic] tests/declared/label.i:4: Declaration of variadic function f.
+[variadic] tests/declared/label.i:8: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/label.c:8: Warning: 
+[kernel:annot:missing-spec] tests/declared/label.i:8: Warning: 
   Neither code nor specification for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/multi.res.oracle

-[variadic] tests/declared/multi.c:1: Declaration of variadic function f.
-[variadic] tests/declared/multi.c:12: Declaration of variadic function g.
-[variadic] tests/declared/multi.c:9: 
+[variadic] tests/declared/multi.i:1: Declaration of variadic function f.
+[variadic] tests/declared/multi.i:12: Declaration of variadic function g.
+[variadic] tests/declared/multi.i:9: 
   Generic translation of call to variadic function.
-[variadic] tests/declared/multi.c:18: 
+[variadic] tests/declared/multi.i:18: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel] tests/declared/multi.c:18: Warning: 
+[kernel] tests/declared/multi.i:18: Warning: 
   No code nor implicit assigns clause for function g, generating default assigns from the prototype
 [eva] using specification for function g
-[kernel] tests/declared/multi.c:9: Warning: 
+[kernel] tests/declared/multi.i:9: Warning: 
   No code nor implicit assigns clause for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/no-va-with-ghost.res.oracle

 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/no-va-with-ghost.c:4: Warning: 
+[kernel:annot:missing-spec] tests/declared/no-va-with-ghost.i:4: Warning: 
   Neither code nor specification for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/no-va.res.oracle

 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/no-va.c:4: Warning: 
+[kernel:annot:missing-spec] tests/declared/no-va.i:4: Warning: 
   Neither code nor specification for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/rvalues-with-ghost.res.oracle

-[variadic] tests/declared/rvalues-with-ghost.c:1: 
+[variadic] tests/declared/rvalues-with-ghost.i:1: 
   Declaration of variadic function f.
-[variadic] tests/declared/rvalues-with-ghost.c:5: 
+[variadic] tests/declared/rvalues-with-ghost.i:5: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/rvalues-with-ghost.c:5: Warning: 
+[kernel:annot:missing-spec] tests/declared/rvalues-with-ghost.i:5: Warning: 
   Neither code nor specification for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/rvalues.res.oracle

-[variadic] tests/declared/rvalues.c:1: Declaration of variadic function f.
-[variadic] tests/declared/rvalues.c:5: 
+[variadic] tests/declared/rvalues.i:1: Declaration of variadic function f.
+[variadic] tests/declared/rvalues.i:5: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/rvalues.c:5: Warning: 
+[kernel:annot:missing-spec] tests/declared/rvalues.i:5: Warning: 
   Neither code nor specification for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/simple-with-ghost.res.oracle

-[variadic] tests/declared/simple-with-ghost.c:1: 
+[variadic] tests/declared/simple-with-ghost.i:1: 
   Declaration of variadic function f.
-[variadic] tests/declared/simple-with-ghost.c:9: 
+[variadic] tests/declared/simple-with-ghost.i:9: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel] tests/declared/simple-with-ghost.c:9: Warning: 
+[kernel] tests/declared/simple-with-ghost.i:9: Warning: 
   No code nor implicit assigns clause for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/simple.res.oracle

-[variadic] tests/declared/simple.c:1: Declaration of variadic function f.
-[variadic] tests/declared/simple.c:9: 
+[variadic] tests/declared/simple.i:1: Declaration of variadic function f.
+[variadic] tests/declared/simple.i:9: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel] tests/declared/simple.c:9: Warning: 
+[kernel] tests/declared/simple.i:9: Warning: 
   No code nor implicit assigns clause for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/struct.res.oracle

-[variadic] tests/declared/struct.c:5: Declaration of variadic function f.
-[variadic] tests/declared/struct.c:10: 
+[variadic] tests/declared/struct.i:5: Declaration of variadic function f.
+[variadic] tests/declared/struct.i:10: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/struct.c:10: Warning: 
+[kernel:annot:missing-spec] tests/declared/struct.i:10: Warning: 
   Neither code nor specification for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main

src/plugins/variadic/tests/declared/oracle/typedefed_function-with-ghost.res.oracle

-[variadic] tests/declared/typedefed_function-with-ghost.c:2: 
+[variadic] tests/declared/typedefed_function-with-ghost.i:2: 
   Declaration of variadic function f.
-[variadic] tests/declared/typedefed_function-with-ghost.c:5: 
+[variadic] tests/declared/typedefed_function-with-ghost.i:5: 
   Generic translation of call to variadic function.
 [eva] Analyzing a complete application starting at main
 [eva] Computing initial state
 [eva] Initial state computed
-[kernel:annot:missing-spec] tests/declared/typedefed_function-with-ghost.c:5: Warning: 
+[kernel:annot:missing-spec] tests/declared/typedefed_function-with-ghost.i:5: Warning: 
   Neither code nor specification for function f, generating default assigns from the prototype
 [eva] using specification for function f
 [eva] done for function main