* configure.in: Add --enable-libssp and --disable-libssp.

	* configure: Regenerate with autoconf-2.13.

	* gcc/doc/install.texi (--disable-libssp): New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@101668 138bc75d-0d04-0410-961f-82ee72b054a4