Issue #1303384 by markpavlitski, EKM, Jeremy: manually release stampede protection lock when done.
Issue #2045353 by DeeZone: Format evicitions on admin stats page.
Issue 2099893 by Jeremy: be sure locking system is available before using.
Issue #1634506 by markpavlitski: properly flush temporary items.
Merge tag '7.x-1.1-beta2' of git://drupalcode.org/project/memcache