openmp.c (match_acc): New generic function to parse OpenACC directives.

openmp.c (match_acc): New generic function to parse OpenACC directives.

	gcc/fortran/
	* openmp.c (match_acc): New generic function to parse OpenACC
	directives.
	(gfc_match_oacc_parallel_loop): Use it.
	(gfc_match_oacc_parallel): Likewise.
	(gfc_match_oacc_kernels_loop): Likewise.
	(gfc_match_oacc_kernels): Likewise.
	(gfc_match_oacc_data): Likewise.
	(gfc_match_oacc_host_data): Likewise.
	(gfc_match_oacc_loop): Likewise.
	(gfc_match_oacc_enter_data): Likewise.
	(gfc_match_oacc_exit_data): Likewise.

From-SVN: r237565