[tests] using hack for tests/misc/global_decl_loc*.i

tests/misc/global_decl_loc.i

 /* run.config
- COMMENT: the script "global_decl_loc.ml" is also copied by the test "global_decl_loc2.i"
- MODULE: global_decl_loc
+ COMMENT: with dune, the LIBS directive must be replaced by a MODULE directive (see also ./test_config file)
+ LIBS: global_decl_loc
    OPT: @PTEST_DIR@/global_decl_loc2.i
  */
 

tests/misc/global_decl_loc2.i

 /* run.config*
- COMMENT: todo in the future: removes the EXECNOW command and modifies the MODULE directive in order to reuse "global_decl_loc"
- COMMENT: the script "global_decl_loc.ml" is also used by the test "global_decl_loc.i"
- EXECNOW: BIN global_decl_loc2.ml cp @PTEST_DIR@/global_decl_loc.ml @PTEST_RESULT@/global_decl_loc2.ml > @DEV_NULL@ 2> @DEV_NULL@
- MODULE: result/global_decl_loc2
+ COMMENT: with dune, the LIBS directive must be replaced by a MODULE directive (see also ./test_config file)
+ LIBS: global_decl_loc
+
    OPT: @PTEST_DIR@/global_decl_loc.i
 */
 extern int g;

tests/misc/test_config

 PLUGIN:
+
+# COMMENT: The next directive is a hack because the module is used
+# COMMENT: by more than one test file (./global_decl_loc.i & ./global_decl_loc2.c)
+# COMMENT: and it can be compiled only once due to ptests concurency.
+# COMMENT: That line should be removed with dune and modifications have to be done in ./global_decl_loc.i and ./global_decl_loc2.c.
 MODULE: global_decl_loc
+
 MODULE:
 STDOPT: