Update Samba4 ports to 4.6.8, 4.5.14 and 4.4.16 respectivelly to address security flaws:

o CVE-2017-12150 (SMB1/2/3 connections may not require signing where

they should)

o CVE-2017-12151 (SMB3 connections don't keep encryption across DFS

redirects)

o CVE-2017-12163 (Server memory information leak over SMB1)

Security: CVE-2017-12150

		CVE-2017-12151
		CVE-2017-12163