[OMPT] Add api_calls_misc.c testcase and rename api_calls.c testcase

The api_calls_misc.c testcase tests the following api calls:

ompt_get_callback()
ompt_get_state()
ompt_enumerate_states()
ompt_enumerate_mutex_impls()
These have not been tested previously.

The api_calls.c testcase has been renamed to api_calls_places.c because it only tests api calls that are related to places.

Differential Revision: https://reviews.llvm.org/D42523

git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@331631 91177308-0d34-0410-b5e6-96231b3b80d8