message: turn off openmp for clang-ibm specs
diff: "toss_4_x86_64_ib_cray":
  [ "clang@14.0.0~openmp+rocm+mfem+c2c amdgpu_target=gfx90a ^raja~openmp+rocm ^umpire~openmp+rocm" ],
  + "__comment__":"# Note: clang-ibm + raja+openmp causes runtime failures, turning it off until there is an alternative",
  "blueos_3_ppc64le_ib_p9":
  - [ "clang@10.0.1.1+devtools+mfem+c2c",
  + [ "clang@10.0.1.1~openmp+devtools+mfem+c2c",
  "clang@10.0.1.2~openmp+devtools+mfem+c2c+cuda cuda_arch=70",
  "gcc@8.3.1.1+devtools~mfem+c2c",
  "gcc@8.3.1.2+devtools~mfem+c2c+cuda cuda_arch=70",
  