OpenACC 2.5 default (present) clause

	gcc/c/
	* c-parser.c (c_parser_omp_clause_default): Handle
	"OMP_CLAUSE_DEFAULT_PRESENT".
	gcc/cp/
	* parser.c (cp_parser_omp_clause_default): Handle
	"OMP_CLAUSE_DEFAULT_PRESENT".
	gcc/fortran/
	* gfortran.h (enum gfc_omp_default_sharing): Add
	"OMP_DEFAULT_PRESENT".
	* dump-parse-tree.c (show_omp_clauses): Handle it.
	* openmp.c (gfc_match_omp_clauses): Likewise.
	* trans-openmp.c (gfc_trans_omp_clauses): Likewise.
	gcc/
	* tree-core.h (enum omp_clause_default_kind): Add
	"OMP_CLAUSE_DEFAULT_PRESENT".
	* tree-pretty-print.c (dump_omp_clause): Handle it.
	* gimplify.c (enum gimplify_omp_var_data): Add
	"GOVD_MAP_FORCE_PRESENT".
	(gimplify_adjust_omp_clauses_1): Map it to
	"GOMP_MAP_FORCE_PRESENT".
	(oacc_default_clause): Handle "OMP_CLAUSE_DEFAULT_PRESENT".
	gcc/testsuite/
	* c-c++-common/goacc/default-1.c: Update.
	* c-c++-common/goacc/default-2.c: Likewise.
	* c-c++-common/goacc/default-4.c: Likewise.
	* gfortran.dg/goacc/default-1.f95: Likewise.
	* gfortran.dg/goacc/default-4.f: Likewise.
	* c-c++-common/goacc/default-5.c: New file.
	* gfortran.dg/goacc/default-5.f: Likewise.
	libgomp/
	* testsuite/libgomp.oacc-c++/template-reduction.C: Update.
	* testsuite/libgomp.oacc-c-c++-common/nested-2.c: Update.
	* testsuite/libgomp.oacc-fortran/data-4-2.f90: Likewise.
	* testsuite/libgomp.oacc-fortran/default-1.f90: Likewise.
	* testsuite/libgomp.oacc-fortran/non-scalar-data.f90: Likewise.

From-SVN: r248280