build/autoconf: fix check for GNU ld version
we need to look for the version once in the stdout and once in the stderr
output. Some version of ld output to stdout, some output to stderr. redirecting
stderr to stdout messes the output up in our case, that's why we have to do two
runs. See also bug #7825.
Signed-off-by: Bjoern Jacke <bj@sernet.de>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Björn Jacke <bj@sernet.de>
Autobuild-Date(master): Tue Feb 19 20:56:12 CET 2013 on sn-devel-104