STunney/BobArnson: WIXFEAT:4239

Add option to not extract the .msi when melting .wixpdbs. Don't leave temporary cabinet files behind (unless -notidy is in effect).
Per feedback. Restore Common.DeleteTempFiles and wrap it in AppCommon instead.
Merge pull request #7 from barnson/feature4239

STunney/BobArnson: WIXFEAT:4239
Get rid of warning RC4005 by passing in _USING_V110_SDK71_ to rc.exe when necessary.
Merge pull request #8 from rseanhall/USING_V110_SDK71

Get rid of annoying build warnings
Set Private to True for the references to
Microsoft.Deployment.WindowsInstaller.dll so that the project will still
build if that DLL is in the GAC.
Merge pull request #11 from rseanhall/bug4163

WIXBUG:4163
Merge branch 'develop' of https://github.com/wixtoolset/wix3 into develop