samba: security bump to version 3.6.24

Fixes:
CVE-2014-0244 (Denial of service - CPU loop)
CVE-2014-3493 (Denial of service - Server crash/memory corruption)

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>