Use a project-specific temporary path
Use a project-specific temporary path

This is so multiple test projects can be run in parallel without sharing the same temp directory

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