Deprecate DB#disable_binary_logging; use new option-handling support in DB#start_mysql and DB#restart_mysql instead.
Comment and doc updates
Completely remove the methods deprecated by last few commits:
* DB#disable_binary_logging and DB#enable_binary_logging now raise an exception
* DB#mysql_config_file removed
* Host#comment_out_ini removed
* Host#uncomment_out_ini removed
* Host#toggle_ini removed

Overall the approach of editing config files is just too brittle,
especially given that config files are usually handled by a configuration
management tool (puppet, chef, cfengine, etc) which can easily clobber
the changes if you forget to disable it.
More output regarding what options in use for DB#start_mysql and DB#restart_mysql
Merge pull request #11 from eelias/mysql_option_overrides

Use command-line options instead of my.cnf overrides
Make the methods that alter replication always report coordinates to stdout