Put a breakpoint on __asan_report_error for ASAN

	* configure.ac: Append gdbasan.in to .gdbinit if CFLAGS contains
	-fsanitize=address.
	* configure: Regenerated.

	* gdbasan.in: New file.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205669 138bc75d-0d04-0410-961f-82ee72b054a4