initial version
A bunch of new MySQL global status tracking plugins.

This commit adds 6 new MySQL plugins that track a number of additional
values that MySQL reports in global status.

Buffer pool stats: tracks operations on the buffer pool, as well as its
                   current size.
Data/Log stats: Tracks data & log operations (reads, writes, bytes
                read/written, etc)
Extra stats: Miscellaneous stats
Handler stats: Tracks operations on MySQL's handler layer
Innodb rows stats: Stats about InnoDB's operations at a row level
Sort/Select: Tracks sort & select type counts
Initial uwsgi plugin
Add more stats to the uwsgi plugin
ruby 1.9.3 compatibility
whitespaces
connect to redis by unix socket
whitespaces
add hits_per_sec and misses_per_sec counters
add hits_per_sec and misses_per_sec counters
Merge pull request #72 from ufirstgroup/redis-socket-connect

Redis socket connect
Merge pull request #73 from ufirstgroup/redis-hits-counter

Redis hits / misses counter
same units for hits/misses, removed hits/misses w/o counter
fixed mongo authentication
Merge branch 'master' of github.com:scoutapp/scout-plugins
Always report the MySQL Seconds_Behind_Master if available
Merge pull request #74 from cgriego/mysql_replication_lag

Always report the MySQL Seconds_Behind_Master if available
For backwards compatibility, defaulting to connecting via host and port
whitespace
Merge branch 'master' of github.com:scoutapp/scout-plugins