This adds the following status variables:
* wsrep_local_recv_queue_max
* wsrep_local_recv_queue_min
* wsrep_local_send_queue_max
* wsrep_local_send_queue_min

All of these are reset when the status variables are read just like
wsrep_local_recv_queue_avg and wsrep_local_send_queue_avg.
Document the meaning of fc_master_slave
reintroduce DOC for fc_limit that says "For master-slave setups this number can be increased considerably."
spelling fix in code comments
update to lastest 3.x
Remove query_cache=0 documentation

based off https://bugs.launchpad.net/codership-mysql/+bug/1279220 it
seems query_cache enable is possible. Lets show this in the
documentation.
Ref #18: Updated the parameter references and CSS to adjust appearance and theme.
Ref #18: Updated code blocks in Getting Started Guide for syntax highlighting.
Ref #18: Updated the Admin Guide code blocks for syntax highlighting.
Ref #18 Updating Troubleshooting and Reference for code block syntax highlighting.
Merge branch '3.x' of https://github.com/codership/galera into 3.x

Merged documentation updates with Galera.
References #30 - added regression test for bug lp:1314854
Merge branch '3.x' of https://github.com/codership/galera into 3.x
merge doco from 3.x
Merge branch 'gh74' into 3.x
Merge branch 'gh78' into 3.x
Merge branch 'gh76' into 3.x
fix for comparison between signed and unsigned
Refs: #30 - modified run-all.sh to run all tests
Merge branch '3.x' of https://github.com/codership/galera into 3.x