symlink-tree adoption effective

[guerby@acm.org]

Nick commited the symlink-tree and MAINTAINERS patch to src, so I
assume gcc is now the master copy of symlink-tree and the file is
currently the same in both trees. (No reactions from autoconf people.)

<http://sources.redhat.com/ml/binutils/2001-12/msg00065.html>

Future patches to symlink-tree should be proposed to
gcc-patches@gcc.gnu.org for approval as documented by src MAINTAINERS
and both versions should be kept in sync.

-- 
Laurent Guerby <guerby@acm.org>