Updating ETW tracing project
Supporting 4.5-only projects.
Merge pull request #337 from jeffwilcox/dev

Updating ETW project
Updating the nuspec for the ETW tracing project
Merge remote-tracking branch 'upstream/dev' into dev
Updating NuSpec
Moving configuration library test project
Merge pull request #338 from jeffwilcox/dev

Moving configuration library test project
Merge branch 'dev' of github.com:WindowsAzure/azure-sdk-for-net into specs-from-nuget