[test-suite] Fix for running tests after cmake transition

[mcrosier]

Summary

This flag controls whether some tests are included when configuring.
It was missed when transitioning from configure to CMake, this adds it
back.

Affects archie-client and plot2fig in MultiSource/Benchmarks/Prolangs-C

Thanks.

[MatzeB]

LGTM. Though it might be a nice thing to move the check into MultiSource/Benchmarks/Prolangs-C/plot2fig/CMakeLists.txt and MultiSource/Benchmarks/Prolangs-C/archie-client/CMakeLists.txt if they are the only two affected, that way it becomes more obvious who/what needs that check. I think cmake also performs the check once and caches the result even if it appears in two different files.

[mcrosier]

Update per Matthias' comments.

[mcrosier]

Committed r257206.

MultiSource/Benchmarks/Prolangs-C/archie-client/CMakeLists.txt

 set(PARALLEL_DIRS)
 
 set(LEVEL ../../../..)
+include(CheckFunctionExists)
+check_function_exists(re_comp HAVE_RE_COMP)
 if(DEFINED HAVE_RE_COMP)
   set(PROG archie)
 endif()

MultiSource/Benchmarks/Prolangs-C/plot2fig/CMakeLists.txt

 set(PARALLEL_DIRS)
 
 set(LEVEL ../../../..)
+include(CheckFunctionExists)
+check_function_exists(re_comp HAVE_RE_COMP)
 if(DEFINED HAVE_RE_COMP)
   set(PROG plot2fig)
 endif()