Initial support in the C front end for OpenACC data clauses.

Initial support in the C front end for OpenACC data clauses.

	gcc/c-family/
	* c-pragma.h (pragma_omp_clause): Add PRAGMA_OMP_CLAUSE_COPY,
	PRAGMA_OMP_CLAUSE_COPYOUT, PRAGMA_OMP_CLAUSE_CREATE,
	PRAGMA_OMP_CLAUSE_DELETE, PRAGMA_OMP_CLAUSE_DEVICEPTR,
	PRAGMA_OMP_CLAUSE_PRESENT, PRAGMA_OMP_CLAUSE_PRESENT_OR_COPY,
	PRAGMA_OMP_CLAUSE_PRESENT_OR_COPYIN,
	PRAGMA_OMP_CLAUSE_PRESENT_OR_COPYOUT, and
	PRAGMA_OMP_CLAUSE_PRESENT_OR_CREATE.
	gcc/c/
	* c-parser.c (c_parser_omp_clause_name): Handle these.
	(c_parser_oacc_data_clause, c_parser_oacc_data_clause_deviceptr):
	New functions.
	(c_parser_oacc_all_clauses): Handle PRAGMA_OMP_CLAUSE_COPY,
	PRAGMA_OMP_CLAUSE_COPYIN, PRAGMA_OMP_CLAUSE_COPYOUT,
	PRAGMA_OMP_CLAUSE_CREATE, PRAGMA_OMP_CLAUSE_DELETE,
	PRAGMA_OMP_CLAUSE_DEVICEPTR, PRAGMA_OMP_CLAUSE_PRESENT,
	PRAGMA_OMP_CLAUSE_PRESENT_OR_COPY,
	PRAGMA_OMP_CLAUSE_PRESENT_OR_COPYIN,
	PRAGMA_OMP_CLAUSE_PRESENT_OR_COPYOUT, and
	PRAGMA_OMP_CLAUSE_PRESENT_OR_CREATE.
	gcc/
	* tree-core.h (omp_clause_code): Update description for
	OMP_CLAUSE_MAP.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gomp-4_0-branch@207177 138bc75d-0d04-0410-961f-82ee72b054a4