backup_migrate 6.x-2.3

Minor bug fixes, the most notable of which is Drush 3 compatibility.

Changes since DRUPAL-6--2-2:

• Added some tests and some tweaks to make them pass (including a fix to the site offline functionality).
• #669680 Profile "View as checkboxes" does not save settings
• Enabled custom submit/validation handlers for filters
• Fixed 'Save without backup' on advanced form
• #752038 by tim.plunkett - Call-time pass-by-reference has been deprecated
• #689080 Fatal error when using edit/delet/export function without an argument (when using admin module)
• #715472 "drush bam destinations" is an empty list
• #720580 by mikey_p, kswan. Drush 3.0 doesn't allow spaces in commands
• #679632 by whiteowl Switching dbs at the wrong time breaks backups of non-drupal dbs
• Possible fix for #661728
• #785908 Fixed by Chipzzz. PHP 5.3 incompatibility while saving profiles
• #840272 all schedules with the same profile uses the same destination
• #840272 Also fixed potential issue with different sources
• #858396 backup never runs when max_execution_time = 0. Removed stray dpm
• #897572 by nicholasThompson. Minor issue with FTP error reporting
• #785908 by roderick, tim.plunkett. backup_migrate PHP 5.3 compatibility Call by reference issue