tentative robustification of WP output

tests/bugs/oracle/issue11.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/bugs/issue11.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/bugs/oracle/issue23.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/bugs/issue23.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/bugs/oracle/issue24.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/bugs/issue24.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/bugs/oracle/issue27-pred.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/bugs/issue27-pred.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/bugs/oracle/logiccast.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/bugs/logiccast.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/bugs/oracle/term.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/bugs/term.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/bugs/test_config

-FILEREG:.*\.\(cc\|cpp\|ii\)$
-MACRO: CXX -machdep=x86_64 -cxx-c++stdlib-path share/libc++ -cxx-clang-command="bin/framaCIRGen -target x86_64-linux-gnu -D__FC_MACHDEP_X86_64"
-OPT:-print -wp -wp-msg-key shell -wp-cache none  @CXX@
-FILTER:/bin/sed -e '/^#[^\n]*/d' -e "s|${FRAMAC_SHARE}|FRAMAC_SHARE|g" -e 's/Alt-Ergo [0-9.]\+/Alt-Ergo/' -e "s|$(pwd)/||g"
+OPT:-print @CXX@ @WP@

tests/da/test_config

-FILEREG:.*\.\(cc\|cpp\|ii\)$
-MACRO: CXX -machdep=x86_64 -cxx-c++stdlib-path share/libc++ -cxx-clang-command="bin/framaCIRGen -target x86_64-linux-gnu -D__FC_MACHDEP_X86_64"
-OPT:-print -wp @CXX@ 
-##FILTER:/bin/sed -e '/^#[^\n]*/d' -e "s|${FRAMAC_SHARE}|FRAMAC_SHARE|g"
+OPT:-print @CXX@ @WP@

tests/ppwp/oracle/expand.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/ppwp/expand.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/ppwp/oracle/expandf.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/ppwp/expandf.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/ppwp/oracle/simple.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/ppwp/simple.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/ppwp/oracle/z.res.oracle

+# frama-c -wp [...]
 [kernel] Parsing tests/ppwp/z.cpp (external front-end)
 Now output intermediate result
 [wp] Running WP plugin...

tests/ppwp/test_config

-FILEREG:.*\.\(cc\|cpp\|ii\)$
-MACRO: CXX -cxx-c++stdlib-path share/libc++ -cxx-clang-command="bin/framaCIRGen"
-OPT:-print -wp @CXX@ 
-##FILTER:/bin/sed -e '/^#[^\n]*/d' -e "s|${FRAMAC_SHARE}|FRAMAC_SHARE|g"
+OPT:-print @CXX@ @WP@

tests/specs/wp_empty_struct.cpp

 /* run.config
-OPT: -wp -wp-msg-key shell -wp-cache none @CXX@
+OPT: @CXX@ @WP@
 */
 class Point2
 {

tests/test_config

 FILEREG:.*\.\(cc\|cpp\|ii\)$
 MACRO: CXX -cxx-c++stdlib-path share/libc++ -cxx-clang-command="bin/framaCIRGen"
 MACRO: EVA -eva -eva-msg-key=-summary
+MACRO: WP -wp -wp-session tests/wp-cache -wp-cache update -wp-msg-key shell
 OPT:-print -check @CXX@
 FILTER:/bin/sed  -e "s|${FRAMAC_SHARE}|FRAMAC_SHARE|g" -e "s|$(pwd)/||g"
-##FILTER:/bin/sed -e '/^#[^\n]*/d' -e "s|${FRAMAC_SHARE}|FRAMAC_SHARE|g"

tests/wp-cache/cache/2457e9e3ceffadd99affa2bac5b00701.json

+{ "prover": "Alt-Ergo:2.0.0", "verdict": "unknown" }

tests/wp-cache/cache/4825227cab959df9b11836e5a86b9400.json

+{ "prover": "Alt-Ergo:2.0.0", "verdict": "valid", "time": 0.0065,
+  "steps": 4 }

tests/wp-cache/cache/700a49708dbbfb8a3d11c4175ff16350.json

+{ "prover": "Alt-Ergo:2.0.0", "verdict": "valid", "time": 0.0131,
+  "steps": 7 }

tests/wp-cache/cache/8a114a0d4786d3d300536602a4e51312.json

+{ "prover": "Alt-Ergo:2.0.0", "verdict": "valid", "time": 0.0068,
+  "steps": 5 }

tests/wp-cache/cache/bbde3b8fa9c480d2796fc88f6c7828a2.json

+{ "prover": "Alt-Ergo:2.0.0", "verdict": "valid", "time": 0.0024,
+  "steps": 6 }