[tests] restore ./src/plugin/loop_analysis/tests from master

src/plugins/loop_analysis/tests/loop_analysis/oracle/slevel_overflow.res.oracle

-[kernel] Parsing slevel_overflow.c (with preprocessing)
-[loop] Functions with loops whose estimated bounds were larger than -loop-max-slevel
-  (we recommend setting their slevel to 0 to avoid wasting time):
-  f2 (estimated bounds: 16777216000000000000000)
-[loop] Add this to your command line:
-  -val-slevel-merge-after-loop f1 \
-  -val-slevel-merge-after-loop f2 \
-  -val-slevel-merge-after-loop f3 \
-  -slevel-function f2:0 \
-  -slevel-function f1:1073741824000000 \
-  -slevel-function f3:18014398509481984

src/plugins/loop_analysis/tests/loop_analysis/oracle/small_loop.0.res.oracle

-[kernel] Parsing small_loop.i (no preprocessing)
-[loop] Add this to your command line:
-  -val-slevel-merge-after-loop main \
-  -slevel-function main:20

src/plugins/loop_analysis/tests/loop_analysis/oracle/small_loop.1.res.oracle

-[kernel] Parsing small_loop.i (no preprocessing)
-[loop] Add this to your command line:
-  -val-slevel-merge-after-loop main \
-  -slevel-function main:20

src/plugins/loop_analysis/tests/loop_analysis/oracle/test.0.res.oracle

-[kernel] Parsing test.i (no preprocessing)
-[loop] Functions with loops whose bounds we could not find:
-  g
-  h6
-[loop] Add this to your command line:
-  -val-slevel-merge-after-loop g \
-  -val-slevel-merge-after-loop h3 \
-  -val-slevel-merge-after-loop h4 \
-  -val-slevel-merge-after-loop h5 \
-  -val-slevel-merge-after-loop h6 \
-  -val-slevel-merge-after-loop main \
-  -slevel-function g:0 \
-  -slevel-function h6:0 \
-  -slevel-function f:8 \
-  -slevel-function h:9 \
-  -slevel-function h2:9 \
-  -slevel-function h3:40 \
-  -slevel-function h4:20 \
-  -slevel-function h5:20 \
-  -slevel-function k:2 \
-  -slevel-function main:20

src/plugins/loop_analysis/tests/loop_analysis/oracle/test.1.res.oracle

-[kernel] Parsing test.i (no preprocessing)
-[loop] Functions with loops whose bounds we could not find:
-  g
-  h6
-[loop] Add this to your command line:
-  -val-slevel-merge-after-loop g \
-  -val-slevel-merge-after-loop h \
-  -val-slevel-merge-after-loop h2 \
-  -val-slevel-merge-after-loop h3 \
-  -val-slevel-merge-after-loop h4 \
-  -val-slevel-merge-after-loop h5 \
-  -val-slevel-merge-after-loop h6 \
-  -val-slevel-merge-after-loop main \
-  -slevel-function g:0 \
-  -slevel-function h6:0 \
-  -slevel-function f:1 \
-  -slevel-function h:9 \
-  -slevel-function h2:9 \
-  -slevel-function h3:20 \
-  -slevel-function h4:10 \
-  -slevel-function h5:10 \
-  -slevel-function k:1 \
-  -slevel-function main:10