Test branch for ommiting caching for large files and reading using buffered IO.
Added BufferPtr class to avoid string operations for big files.
Etag?
Added Etag support for cached files to StaticFileHandler.
Added .woff extension MIME string.
Added missing cookie handling to HTTPClient.
Updated doc for web.StaticFileHandler to reflect the latest file caching strategy.
Merge pull request #135 from kernelsauce/test-no-cache-buffered-ptr

No cache big files.