[Patch] Fortran/OpenMP: Fix __builtin_omp_is_initial_device

Patches gfc_conv_procedure_call (+ called functions). Found via OpenMP_VV which uses rather pointlessly 'if (omp_is_initial_device() .eqv. .true.)' – instead of using 'if (omp_…())'. This failed with an ICE as the middle end did not like 'if ( == )' comparisons. The initial idea was to crea

Re: [Fortran, Patch, PR51815, v3] Fix parsing of substring refs in coarrays.

Hi Harald, I agree that the gfc_match_array_ref() is not needed for error recovery or helps anyhow. I therefore removed it. I left the new error message in, because in the case that c = x(:)(2:5) is in a subroutine, like in pr102532.f90, then I get no error. Neither without return MATCH_ERROR nor