s3: winbindd: Old NT Domain code sets struct winbind_domain->alt_name to be NULL. Ensure this is safe with modern AD-DCs.

There are places in the code where we're not checking that alt_name is NULL
and then calling into the DC lookup code with a NULL name request. This can
happen in offline mode.

Fixes bug #10717 - Winbind crash on losing VPN connection

https://bugzilla.samba.org/show_bug.cgi?id=10717

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>

Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Mon Sep 15 23:29:00 CEST 2014 on sn-devel-104
vfs_gpfs: Fix the build with profiling-data

This fails with -Werror=declaration-after-statement

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Sep 16 01:55:57 CEST 2014 on sn-devel-104
Initial work for bind 9.10 support (plugin api version 3)
const stuff?
adding dnsserver_common to new bind version backend