Use only 2-element Path.Combine for downlevel compat
Use only 2-element Path.Combine for downlevel compat

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