Respect order of target apps in deciding which to invoke

git-svn-id: http://zxing.googlecode.com/svn/trunk@2825 59b500cc-1b3d-0410-9834-0bbf25fbcc57
Update plugins

git-svn-id: http://zxing.googlecode.com/svn/trunk@2826 59b500cc-1b3d-0410-9834-0bbf25fbcc57