Manually bump android/androidtest modules to 2.3.0 since weren't enabled from parent

git-svn-id: http://zxing.googlecode.com/svn/trunk@2972 59b500cc-1b3d-0410-9834-0bbf25fbcc57
Bump android/androidtest to 3.0.0 manually

git-svn-id: http://zxing.googlecode.com/svn/trunk@2976 59b500cc-1b3d-0410-9834-0bbf25fbcc57