Add backwards-compatibility tests for filetransfer
Add backwards-compatibility tests for filetransfer

apache/cordova-mobile-spec,polyvi/xface-mobile-spec,corimf/cordova-mobile-spec,polyvi/xface-mobile-spec,ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,ollie314/cordova-mobile-spec,ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,ollie314/cordova-mobile-spec,ollie314/cordova-mobile-spec,apache/cordova-mobile-spec,apache/cordova-mobile-spec,corimf/cordova-mobile-spec,apache/cordova-mobile-spec,polyvi/xface-mobile-spec,apache/cordova-mobile-spec,corimf/cordova-mobile-spec