Patch to update libtool in GCC and Src trees

[Steve Ellcey]

Charles Wilson wrote:

> However: on other platforms (see src/newlib/configure.host: at present, 
> only linux native) newlib may in fact use libtool.  It doesn't appear 
> that any of Steve's patches address that:
> 
>    (1) src/newlib/configure.in says "AC_CONFIG_AUX_DIR(..)" so
>        newlib will see the "new" ltmain.sh
>    (2) src/newlib/Makefile.am says "ACLOCAL_AMFLAGS = -I ." so
>        aclocal will use newlib/libtool.m4, which is "old", and NOT
>        the "new" src/libtool.m4 and the other .m4 friends.