wip in FileStore
Changing size to long. More unit test
Some tracing added
adding traces
better last updated - use reponse lastmodified
more trace + test fix (dispose)
adding slim read-write lock. only temporary

Will backout
Found deadlock bug!

Never use new HttpResponseMessage without setting request.
Adding concurrency test + upgrade nuget
Some more changes no avail

Deadlock in FileStore. Need to change approach and remove reader writer
slim
Re-doing FileStore. Tests OK.

Concurrency tests now passed
Changing versioning. Each project now has its own
Reverting versions. Adding nuget spec for file
Change sqlite.interop from content to none
Adding Redis for client + MustRevalidate bug fix
added execute permissions for nuget.exe
first implementation of RavenDb Etag Store
Adding Staleness logic to CacheCow.Client

Handling of Max-Age, Max-Stale, Min-Fresh and similar
upgraded to RavenDb 1.2.2096 - minimum requirement for green inmemory documentstore tests
merged aliostad/master