fixed #172
Merge branch 'master' of https://github.com/unbit/uwsgi
added JVM cache_get and lock/unlock
fixed alarm subsystem and added uwsgi.alarm to the JVM
do not start the alarm thread if not needed
prepare for magic cache functions
another update to the cache magic api
removed the threaded cache server, it has been superseeded by the new async architecture
reimplementation of the cache networking protocol to be fully non-blocking
added cache check for max item size
other improvements in the cache api
completed cache magic update
prepare for exists del and clear
fixed the cache router
implemented cache magic exists and del
completed magic cache clear
ported the new magic cache api to perl/psgi
ported magic cache api to ruby
ported magic cache api to php
ported magic cache api to lua