Fix CMake build on Windows

[omalyshe]

Summary

Two symbols for the external debugger support were incorrectly exported when LIBOMP_USE_DEBUGGER=off.

[ismail]

LGTM. Fixes the build for me on Windows.

openmp/trunk/runtime/cmake/LibompHandleFlags.cmake

else()
     set(libomp_gdflag_arch arch_${LIBOMP_ARCH})
   endif()
   libomp_append(gdflags_local "-D ${libomp_gdflag_arch}")
   libomp_append(gdflags_local "-D msvc_compat")
   libomp_append(gdflags_local "-D norm" NORMAL_LIBRARY)
   libomp_append(gdflags_local "-D prof" PROFILE_LIBRARY)
   libomp_append(gdflags_local "-D stub" STUBS_LIBRARY)
   libomp_append(gdflags_local "-D HAVE_QUAD" LIBOMP_USE_QUAD_PRECISION)
+  libomp_append(gdflags_local "-D USE_DEBUGGER" LIBOMP_USE_DEBUGGER)
   if(${LIBOMP_OMP_VERSION} GREATER 41 OR ${LIBOMP_OMP_VERSION} EQUAL 41)
     libomp_append(gdflags_local "-D OMP_41")
   endif()
   if(${LIBOMP_OMP_VERSION} GREATER 40 OR ${LIBOMP_OMP_VERSION} EQUAL 40)
     libomp_append(gdflags_local "-D OMP_40")
   endif()
   if(${LIBOMP_OMP_VERSION} GREATER 30 OR ${LIBOMP_OMP_VERSION} EQUAL 30)
     libomp_append(gdflags_local "-D OMP_30")
   endif()
   if(${DEBUG_BUILD} OR ${RELWITHDEBINFO_BUILD})
     libomp_append(gdflags_local "-D KMP_DEBUG")
   endif()
   set(${gdflags} ${gdflags_local} PARENT_SCOPE)
 endfunction()

openmp/trunk/runtime/src/dllexports

# Regular entry points
         __kmp_acquire_nested_drdpa_lock
 
     %ifdef KMP_DEBUG
         # allows console output capability for applications those don't have it
         __kmp_printf
     %endif
 
 
-#if USE_DEBUGGER
+    %ifdef USE_DEBUGGER
         __kmp_debugging                         DATA
         __kmp_omp_debug_struct_info             DATA
-#endif /* USE_DEBUGGER */
+    %endif 
 
         # Symbols for MS mutual detection:
         _You_must_link_with_exactly_one_OpenMP_library    DATA
         _You_must_link_with_Intel_OpenMP_library          DATA
         %ifdef msvc_compat
             _You_must_link_with_Microsoft_OpenMP_library  DATA
         %endif