dotnet/corefx — pull request #290 by FiveTimesTheFun (2014-12-18 19:47:08+00:00)
Title: Reenable PLINQ tests on command line build, keep disabled in AppVeyor

Change SkipTestAssemblies from an ItemGroup to a PropertyGroup so it
can be overridden on the command line, and modify AppVeyor's build
invocation to disable PLINQ tests as we investigate GH corefx/283