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
improved error handling and messages
Initial uwsgi plugin
improved error reporting
report command and output when the PID can't be found
Added backup servers, removed frequently irrelevant log watcher trend trigger
Add master/slave monitoring & metrics to RedisMonitor

* reports the current 'role'
* if slave, then also reports:
  * 'master_link_status' (1 for up, 0 for down)
  * 'master_last_io_seconds_ago'
  * 'master_sync_in_progress'

The thought is you'd be able ot install this on a master/slave pair, and
it'd be collecting the correct metrics regardless of which is master and
which is slave.

In addition, reporting master_link_status as 1 or 0 allows
you to create a Plateau Trigger with low values, and alert aftering
after it has been down for N units of time.
Adds connection monitoring to mongo_overview
freeform proxy type entry
ruby 1.9 and 1.8 compatibility
Merge branch 'master' of github.com:scoutapp/scout-plugins
Merge branch 'master' into haproxy_proxy_type
better error message
Merge pull request #63 from railsmachine/redis-master-slave-monitoring

Add master/slave monitoring & metrics to RedisMonitor
Merge pull request #64 from miketheman/adding-connections

Adds connection monitoring to mongo_overview
adding default plateau trigger for master_link_status
fixing trigger typo
Corrected incorrect hitrate calculation (it could be negative!), removed bad metric, made metrics and rate user definable
Updates

Added a memory check to see the last status of the port. This way we will only send an alert if the port was up last run and is down this run.

Added a trigger to the yaml spec which will send an alert if there are no access requests being reported.