Fix for System.open_url

The following lines of code need to be added to support iPad 2. Without these lines, iPad 2 crashes on iOS 6 when trying to open the list of available apps to open the file with. This is to support opening files in other apps if file preview cannot read it.
Additional description for Sensor apis
Merge branch 'master' into gxv738_dev
Conflicts resolved in sensor.xml
android: fix JNI reference error
websocket extension
wm/win32: build fixed
rhosimulator/osx: Core API build via QMake
rhodes version 4.1.0
rhosimulator/osx: crash in JSON parser fixed
rhosimulator/osx: logCapture build via QMake
rhosimulator/osx: build digest extension using QMake
move socket library to version 1.9.2p290 [android]
Merge branch 'master' of github.com:rhomobile/rhodes
rhosimulator/osx: build all extensions with QMake
rhosimulator/osx: all extensions added to debug build
lib/build/jake.rb: minor fix.
rhogen: add binding_name to method, now there are three names: - name that is used in scripts, biding_name that is used in the bridge and native_name that is used native extension. they can be different in special cases
rhogen: use special type of class for entities and use it in method result converter
rhosimulator/win32: build extensions with QMake (part 1)