Low: RA: mysql: improve unset_master
Low: RA: mysql: improve unset_master

Instead of issuing just STOP SLAVE, give the replication slave a
chance to complete pending statements:

- First, stop just the slave I/O thread.
- Wait for the relay log to be processed.
- Then, stop the slave SQL thread too.
- Unset the master host.

--HG--
branch : mysql-ms-2

asp24/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,asp24/resource-agents