Use Reader Writer lock in ProjectCollection
Use Reader Writer lock in ProjectCollection

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