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
start of splitting mongo overall into 2 plugins
separated out mongo serverStatus
Merge branch 'master' into mongo_split
Split out overview stats
removing database option, setting verbose
Use block form of PGconn to ensure closing of connection
Less noise
fixing class name
Reporting data sizes as MB
Fixing correct units
moving rails-specific options to advanced
More precision w/larger units
removed tuner summaries
Merge branch 'mysql_stats_no_gem'
Optional mysql command, adding error message when command isn't found