Restore packages in Calculator sample
Merge branch 'master' into develop

Conflicts:
	Samples/Calculator/build.bat
	Samples/Calculator/build.fsx
	Samples/Calculator/completeBuild.bat
	Samples/Calculator/completeBuild.fsx
	Samples/Calculator/foobar.bat
	Samples/Calculator/foobar.fsx
	lib/fsi/FSharp.Core.xml