Upgraded port to the latest 3.6.16 revision.

(cherry picked from commit 3c8ba88ab4eb10bf9da35d0ee90f7cb0035a0ba5)

Conflicts:
	UPDATING
Fixed typo in the patch that broke winbind_krb5_locator linking. Add external
dependency on tevent library.

PR:		180074, 180053
(cherry picked from commit da91dc27fda6fc9dd34ab88d892573f9f4061bc4)
Security update

Security:	CVE-2013-4124
(cherry picked from commit 5b69ec38506d5228370a96643dd97243bdac2515)