[GAC scanning, FxCop] Added more logging to detect situations where Assembly.Load fails on GAC assemblies during dependency injection bootstrap.
- I've got a weird situation on a particular server where the GAC isn't scanned properly (one DLL isn't loaded) and I was missing diagnostics info on the GACAssemblyLocator code.
- Added separate FxCop files for Debug and Release to get rid of the annoying prompts. Turns out that TeamCity build wasn't failing even when FxCop errors were present.
- The TeamCity build should fail with this commit.