Enable tests disabled due to resolving wrong DLL
Enable tests disabled due to resolving wrong DLL

These tests now appear to fail only on OS X. Related to #309.

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