Makefile.in (srcdir): Set to @top_srcdir@ instead of @srcdir@.

Makefile.in (srcdir): Set to @top_srcdir@ instead of @srcdir@.

gcc/ada/:
	* Makefile.in (srcdir): Set to @top_srcdir@ instead of @srcdir@.
	* gcc-interface/Makefile.in: Change all uses of $(srcdir),
	$(fsrcdir) and $(fsrcpfx) to add ada subdir.
	(AWK): Substitute.
	(target_cpu_default): Substitute.

gnattools/:
	* Makefile.in (fsrcdir): Point to gcc directory, not gcc/ada.
	(INCLUDES_FOR_SUBDIR): Adjust.
	(ADA_INCLUDES_FOR_SUBDIR): Adjust.

From-SVN: r144463