[OMPT] Rename ompt_frame_t to omp_frame_t

Rename ompt_frame_t to omp_frame_t, as defined in the spec.

Differential Revision: https://reviews.llvm.org/D43568

git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@333367 91177308-0d34-0410-b5e6-96231b3b80d8
10 files changed