Exposed Global and Thread Contexts of NLog and Log4Net via Common.Logging
Added tests
Merge branch 'master' of github.com:meixger/common-logging into meixger-master
add links to new ***Context.cs files to additional logger implementations added since original fork was made for this work
add additional NLog *Context tests to additional NLog implementations added since initial fork was made for this PR
Merge branch 'meixger-master'
delete erroneously-tracked XML comment files that somehow got into the index before .gitignore was properly updated to include them
update to include several additional XML comment files accidentally overlooked
change XML code comments annotations for method params to reflect proper XML code comment syntax
fix missing *Context.cs references in .NET 2.0 projects
refactor method parameter names to align with XML code comments (else WARNINGS as ERRORS will detect these and fail the build)
remove erroneous XML comment file for Common.Logging.Portable and add to gitignore