toplev.c (rest_of_compilation): Seperate the setjmp/vfork clobber warning from -Wuninitialized and put it under -W.

Sun Oct 31 13:32:15 CET 1999  Marc Lehmann <pcg@goof.com>

	* toplev.c (rest_of_compilation): Seperate the setjmp/vfork clobber
        warning from -Wuninitialized and put it under -W.
        * function.c (uninitialized_vars_warning): Warn only when the
        corresponding flag is set.

From-SVN: r30294