Make output groups extensible
Make output groups extensible

Make each of the *OutputGroupDependencies targets individually extensible by giving each a unique property controlling which targets they depend on.

rainersigwald/msbuild,chipitsine/msbuild,rainersigwald/msbuild,jeffkl/msbuild,chipitsine/msbuild,mono/msbuild,Microsoft/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,mono/msbuild,cdmihai/msbuild,jeffkl/msbuild,jeffkl/msbuild,cdmihai/msbuild,chipitsine/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild,Microsoft/msbuild,cdmihai/msbuild,mono/msbuild,sean-gilliam/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,jeffkl/msbuild,Microsoft/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,mono/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,Microsoft/msbuild