samba: update to version 3.6.23

This updates samba to the most recent minor version.
This patch is based on a patch by Anton van Bohemen <avbohemen@ziggo.nl>

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40618 3c298f89-4303-0410-b956-a3cf2f4a3e73