Fixed issue #501 for VS2010 and VS2012 ([2.0.0001] debugging on older OS runtime always prompts download if newer OS runtime is installed)
Merge branch 'next-501' of https://github.com/blackberry/VSPlugin into next

Conflicts:
	src/VSNDK.Package/UpdateManager/Model/UpdateManagerData.cs
	src/VSNDK.Package/VSNDK.PackagePackage.cs
	src_vs2012/VSNDK.Package/UpdateManager/Model/UpdateManagerData.cs
	src_vs2012/VSNDK.Package/VSNDK.PackagePackage.cs