Run tests / Fix builds when --keepFiles is specified (#2423) * Include guid in build artifacts directory when --keepFiles is specified. * Use an auto-incremented id instead of guid. Always use same ProgramName regardless of --keepFiles. Include benchmark assembly name in ProgramName. * Fix InProcessBenchmarkEmitsSameIL tests. * Added comment from PR feedback.

Run tests / Fix builds when --keepFiles is specified (#2423) * Include guid in build artifacts directory when --keepFiles is specified. * Use an auto-incremented id instead of guid. Always use same ProgramName regardless of --keepFiles. Include benchmark assembly name in ProgramName. * Fix InProcessBenchmarkEmitsSameIL tests. * Added comment from PR feedback. #1045