Fix Windows 8.1 crash on cordova-windows@5

Fix for crash 8.1-win (Windows 8.1 build) was made in CB-12784 and CB-13175. The changes were committed in the master branch, originally targeted for cordova-windows 5.1.0 but now targeted for cordova-windows 6.0.0 ref: http://callback.markmail.org/thread/rzfa2zoydyjq6xso

I would really like to see this crash fixed in cordova-windows@5, delivered ASAP. I would like to propose that we cherry-pick the fixes into the 5.0.x branch and issue the new release within the next 1-2 days.