openacc: Rename OMP_CLAUSE_TILE to OMP_CLAUSE_OACC_TILE

openacc: Rename OMP_CLAUSE_TILE to OMP_CLAUSE_OACC_TILE

OMP_CLAUSE_TILE will be used for the OpenMP 5.1 loop transformation
construct "omp tile".

gcc/ChangeLog:

	* tree-core.h (enum omp_clause_code): Rename OMP_CLAUSE_TILE.
	* tree.h (OMP_CLAUSE_TILE_LIST): Rename to ...
	(OMP_CLAUSE_OACC_TILE_LIST): ... this.
	(OMP_CLAUSE_TILE_ITERVAR): Rename to ...
	(OMP_CLAUSE_OACC_TILE_ITERVAR): ... this.
	(OMP_CLAUSE_TILE_COUNT): Rename to ...
	(OMP_CLAUSE_OACC_TILE_COUNT): this.
	* gimplify.cc (gimplify_scan_omp_clauses): Adjust to renamings.
	(gimplify_adjust_omp_clauses): Likewise.
	(gimplify_omp_for): Likewise.
	* omp-general.cc (omp_extract_for_data): Likewise.
	* omp-low.cc (scan_sharing_clauses): Likewise.
	(lower_oacc_head_mark): Likewise.
	* tree-nested.cc (convert_nonlocal_omp_clauses): Likewise.
	(convert_local_omp_clauses): Likewise.
	* tree-pretty-print.cc (dump_omp_clause): Likewise.
	* tree.cc: Likewise.

gcc/c-family/ChangeLog:

	* c-omp.cc (c_oacc_split_loop_clauses): Adjust to renamings.

gcc/c/ChangeLog:

	* c-parser.cc (c_parser_omp_clause_collapse): Adjust to renamings.
	(c_parser_oacc_clause_tile): Likewise.
	(c_parser_omp_for_loop): Likewise.
	* c-typeck.cc (c_finish_omp_clauses): Likewise.

gcc/cp/ChangeLog:

	* parser.cc (cp_parser_oacc_clause_tile): Adjust to renamings.
	(cp_parser_omp_clause_collapse): Likewise.
	(cp_parser_omp_for_loop): Likewise.
	* pt.cc (tsubst_omp_clauses): Likewise.
	* semantics.cc (finish_omp_clauses): Likewise.
	(finish_omp_for): Likewise.

gcc/fortran/ChangeLog:

	* openmp.cc (enum omp_mask2): Adjust to renamings.
	(gfc_match_omp_clauses): Likewise.
	* trans-openmp.cc (gfc_trans_omp_clauses): Likewise.