* gcc-interface/Make-lang.in (ada/%.o): Replace individual rules with
	generic rule and add $(POSTCOMPILE).
	(ADA_DEPS): New.
	(.adb.o): Add @$(ADA_DEPS).
	(.ads.o): Likewise.
	(ada/a-except.o): Likewise.
	(ada/s-excdeb.): Likewise.
	(ada/s-assert.o): Likewise.
	(ada/a-tags.o): Likewise.
	(ada_generated_files): New variable.
	Use them as dependency order for GNAT1_ADA_OBJS and GNATBIND_OBJS.
	(ADA_DEPFILES): New variable.
	Include them.
	(ada_OBJS): Define.

Co-Authored-By: Eric Botcazou <ebotcazou@adacore.com>

From-SVN: r203508