Sync toplevel files with GCC tree

Sync toplevel files with GCC tree

2012-09-28  Ian Lance Taylor  <iant@google.com>

	* Makefile.def: Make all-target-libgo depend on
	all-target-libbacktrace.
	* Makefile.in: Rebuild.

2012-09-26  Ian Lance Taylor  <iant@google.com>

	* Makefile.def: Make all-gcc depend on all-libbacktrace.
	* Makefile.in: Rebuild.

2012-09-06  Diego Novillo  <dnovillo@google.com>

	* configure.ac: Bump minimum GMP version to 4.2.3.
	* configure: Re-generate.

2012-09-05  Georg-Johann Lay  <avr@gjlay.de>

	PR target/54461
	* configure.ac (noconfigdirs,target=avr-*-*): Add target-newlib,
	target-libgloss if not configured --with-avrlibc=no.
	* configure: Regenerate.

2012-09-04  Jason Merrill  <jason@redhat.com>

	* configure.ac: Fix --enable-languages=all.

2012-09-03  Richard Guenther  <rguenther@suse.de>

	PR bootstrap/54138
	* configure.ac: Re-organize ISL / CLOOG checks to allow
	disabling with either --without-isl or --without-cloog.
	* configure: Regenerated.

2012-09-03  Georg-Johann Lay  <avr@gjlay.de>

	* configure.ac (noconfigdirs,target=avr): Add target-libquadmath.
	* configure: Regenerate.