gnattools/
	* Makefile.in (LOOSE_WARN): Delete.
	(GCC_WARN_CFLAGS): Set to -W -Wall.
	(TOOLS_FLAGS_TO_PASS_1): Delete.
	(TOOLS_FLAGS_TO_PASS_1re): Rename into...
	(TOOLS_FLAGS_TO_PASS_RE): ...this.
	(gnattools-native): Use TOOLS_FLAGS_TO_PASS_NATIVE.
	(regnattools): Use TOOLS_FLAGS_TO_PASS_RE.
libada/
	* Makefile.in (LOOSE_WARN): Delete.
	(GCC_WARN_CFLAGS): Likewise.
	(WARN_CFLAGS): Likewise.
	(GNATLIBFLAGS): Add -nostdinc.
	(GNATLIBCFLAGS_FOR_C): Add -W -Wall.
 	(LIBADA_FLAGS_TO_PASS): Remove WARN_CFLAGS.
	* configure.ac (warn_cflags): Delete.
	* configure: Regenerate.
gcc/ada/
	* sem_util.adb (Denotes_Same_Prefix): Fix fatal warning.
	* gcc-interface/Make-lang.in (WARN_ADAFLAGS): New.
	(ALL_ADAFLAGS): Include WARN_ADAFLAGS.
	(ADA_FLAGS_TO_PASS): Likewise.
	(COMMON_FLAGS_TO_PASS): New.
	(ADA_TOOLS_FLAGS_TO_PASS): Use COMMON_FLAGS_TO_PASS.  In the regular
	native case, also use FLAGS_TO_PASS and ADA_FLAGS_TO_PASS.
	(gnatlib): Use COMMON_FLAGS_TO_PASS.
	(ada.install-common): Likewise.
	(install-gnatlib): Likewise.
	(install-gnatlib-obj): Likewise.
	(gnattools): Use ADA_TOOLS_FLAGS_TO_PASS for gnattools1 as well.
	(gnat-cross): Delete.
	(gnatboot): Likewise.
	(gnatboot2): Likewise.
	(gnatboot3): Likewise.
	(gnatstage1): Likewise.
	(gnatstage2): Likewise.
	* gcc-interface/Makefile.in (SOME_ADAFLAGS): Likewise.
	(MOST_ADAFLAGS): Likewise.
	(LOOSE_CFLAGS): Likewise.
 	(gnat-cross): Likewise.
	(GNATLIBFLAGS): Add -W -Wall.
	(GNATLIBCFLAGS_FOR_C): Likewise.
	* gcc-interface/lang.opt: Remove C-specific warnings.  Add doc lines.
	* gcc-interface/misc.c (gnat_handle_option): Remove obsolete cases.

From-SVN: r179878