Issue #1547390 by imclean, unitedwallabies, Jeremy: properly display stats when using unix sockets.
Issue #1908358 by markpavlitski: fix paths to memcache-session.inc.
Issue #1995556 by markpavlitski: be sure memcache backend is used during tests.
Issue #2204075 by Jeremy: standardize/improve statistics collection and display.
Issue #1984226 by jimmyhuang, markpavlitski: use hook_user_update instead of hook_user
Merge tag '7.x-1.1-beta4' of git://drupalcode.org/project/memcache