Make-lang.in (CXX_C_OBJS): Add c-ada-spec.o.

	* Make-lang.in (CXX_C_OBJS): Add c-ada-spec.o.
	* decl2.c: Include langhooks.h and c-ada-spec.h.
	(cpp_check, collect_source_refs, collect_ada_namespace,
	collect_all_refs): New functions.
	(cp_write_global_declarations): Add handling of -fdump-ada-spec.
	* lang-specs.h: Ditto.

Co-Authored-By: Matthew Gingell <gingell@adacore.com>

From-SVN: r160103