re PR ada/12761 ([3.3 only] Segmentation fault in gnat1 compiling a-except.adb)

(gcc)
	PR ada/12761
	* Makefile.in: Move default definitions of X_ADA_CFLAGS,
	T_ADA_CFLAGS, X_ADAFLAGS, T_ADAFLAGS from ada/Make-lang.in to here.
(gcc/ada)
	PR ada/12761
	* ada/Make-lang.in: Move default definitions of X_ADA_CFLAGS,
	T_ADA_CFLAGS, X_ADAFLAGS, T_ADAFLAGS from here to master Makefile.in.

From-SVN: r73125