Added Common.Tracing.Etw and Common.Tracing.Etw.Test projects
Implemented EtwTracingInterceptor class logic and added appropriate integration tests.
Added NuSpec and NuSpec.Proj files for Microsoft.WindowsAzure.Common.Tracing.Etw
Added readme.txt file
Imported general library targets and cleaned up project file
Changed SendRequest and ReceiveResponse to be virtual to allow for further configuration by end users
Changed ETW NuGet package name to match other Windows Azure packages
Fixed misc. issues raised by FxCop
Merge branch 'dev' of https://github.com/WindowsAzure/azure-sdk-for-net into etw
Cleanup
Moved common tracing functionality into CloudTracingExtensions and added tests
Updates based on code review.
Updates based on code review
Changes suggested by StyleCop
Added StyleCop
Merge branch 'dev' into etw
Based on PR comments, created a common project for all Tracing libraries
Updated field name to match naming convention
Merge pull request #321 from stankovski/etw

Implemented ETW tracing via ICloudTracingInterceptor