Apparently symlink-tree has not been used in quite some time as it
fails to symlink the always required config dir

Also, if we pulled from git but .git is missing we get
many error messages on the symlinked tree without this
patch (which symlinks .git, if present)

Signed-off-by: Daniel Dickinson <openwrt@daniel.thecshore.com>

Makes warnings/errors visible when building with V=w/V=1.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 35718

add a simple script for symlinking one tree into another for doing builds with separate build dirs, but the same source dir

SVN-Revision: 18734