Ticket #47516 replication stops with excessive clock skew

https://fedorahosted.org/389/ticket/47516
Reviewed by: nhosoi (Thanks!)
Branch: 389-ds-base-1.2.11
Fix Description: The previous fix was not adequate.  Instead, the determination
of whether or not to ignore time skew should be determined in
csngen_adjust_time().
Platforms tested: RHEL6 x86_64
Flag Day: no
Doc impact: yes - document new config param
(cherry picked from commit 9f2b104b0938b21d7c9fe37c736d0e6328843aeb)
(cherry picked from commit a6ec074c6295a59938f313b4fe09430e8f601fab)
(cherry picked from commit b51a57b20386e506a7eb484b62d39bf249ef995f)
Ticket 47678 - modify-delete userpassword

Description:  Needed to backport ticket 394 to 1.2.11.  Had to remove the password
              extension code from the original patch.

https://fedorahosted.org/389/ticket/47678

Reviewed by: nhosoi(Thanks!)