GetRarPipeName fix
GetRarPipeName fix

mono/msbuild,rainersigwald/msbuild,cdmihai/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,mono/msbuild,mono/msbuild,sean-gilliam/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,cdmihai/msbuild,mono/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild