* Makefile.tpl (BOOT_ADAFLAGS): Remove -gnata.
	* Makefile.in: Regenerate.
gcc/
	* configure.ac (Tree checking): Set TREECHECKING to yes if enabled.
	Substitute TREECHECKING.
	* configure: Regenerate.
	* Makefile.in (TREECHECKING): New.
gcc/ada/
	* gcc-interface/Make-lang.in (COMMON_ADAFLAGS): Remove -gnata.
	(CHECKING_ADAFLAGS): New.
	(ALL_ADAFLAGS): Include CHECKING_ADAFLAGS.

From-SVN: r195104