* Fixed: Backups for hosts having issues with "compress.zlib://" stream wrappers from PHP causing corrupt backup archives
* Fixed: "Another backup is running" message displaying incorrectly 

git-svn-id: https://plugins.svn.wordpress.org/mainwp-child/trunk@1054610 b8457f37-d9ea-0310-8a92-e5e31aec5664