Implement stat and errmsg.

Implement stat and errmsg.

gcc/fortran/ChangeLog:

	* trans-decl.c (gfc_sym_mangled_function_id): Whitespace fix.
	(gfc_build_builtin_function_decls): Correct fn specs.
	* trans-intrinsic.c (trans_argument): Re-apply fix (?)
	(conv_cas_reduce): Likewise.
	(conv_co_collective): Likewise.

libgfortran/ChangeLog:

	* Makefile.am: Add counter_barrier.c and counter_barrier.h
	* Makefile.in: Regenerate.
	* generated/nca_minmax_i1.c: Regenerated.
	* generated/nca_minmax_i16.c: Regenerated.
	* generated/nca_minmax_i2.c: Regenerated.
	* generated/nca_minmax_i4.c: Regenerated.
	* generated/nca_minmax_i8.c: Regenerated.
	* generated/nca_minmax_r10.c: Regenerated.
	* generated/nca_minmax_r16.c: Regenerated.
	* generated/nca_minmax_r4.c: Regenerated.
	* generated/nca_minmax_r8.c: Regenerated.
	* generated/nca_minmax_s1.c: Regenerated.
	* generated/nca_minmax_s4.c: Regenerated.
	* m4/nca-minmax-s.m4: Add stat and errmsg.
	* m4/nca_minmax.m4: Likewise.
	* nca/coarraynative.c (get_master): New function.
	(test_for_cas_errors): New function.
	(master_is_image_active): New function.
	(master_get_num_active_images): New function.
	(master_bind_active_image_barrier): New function.
	(error_on_missing_images): New function.
	(cas_master): New function.
	* nca/collective_subroutine.c (collsub_sync): Replace pthread_barrier_wait
	by counter_barrier.
	(collsub_reduce_array): Add error_on_missing_images. Adjust to number of
	images.
	(collsub_reduce_scalar): Likewise.
	(collsub_iface_init): Likewise.
	* nca/collective_subroutine.h: Replace pthread_barrier_t by counter_barrier.
	* nca/libcoarraynative.h: Include counter_barrier.h.  Add handling
	for failed images, stat and errmsg.
	* nca/sync.c (sync_all_init): Replace pthread_barrir by counter_barrier.
	(sync_iface_init): Adjust handling to total_num_images.
	(sync_table): Likewise.
	(sync_all): LIkewise.
	* nca/sync.h: Include some theaders, adjust to counter_barrier.
	* nca/util.h: Add internal_proto to unpack_array_finish.
	* nca/wrapper.c (cas_collsub_reduce_array): Adjust to total_num_images,
	handle status and errmsg.
	(cas_collsub_reduce_scalar): Likewise.
	(cas_collsub_broadcast_array): Likewise.
	(cas_collsub_broadcast_scalar): Likewise.
	(cas_coarray_alloc): Likewise.
	(cas_coarray_free): Likewise.
	(cas_coarray_num_images): Likewise.
	(cas_coarray_sync_all): Likewise.
	(cas_sync_images): Likewise.
	* nca/counter_barrier.c: New file.
	* nca/counter_barrier.h: New file.