UNDERTOW-270 Use canonicalize() on ServletContext.getRealPath() implementation's input
UNDERTOW-259 Throw an exception on a false outcome instead of commiting the response
UNDERTOW-268 Make setting the Content-Type header manually act the same as calling setContentType
Call setContentType in DefaultServlet
UNDERTOW-276 Fix bug in HeaderValues and simplify the code
Merge pull request #225 from lucasponce/UNDERTOW-270-master

UNDERTOW-270 Use canonicalize() on ServletContext.getRealPath() implemen...
Fix spdy stream issue
Don't notify frame read complete till all pending data has been read
Fix thread safety issue
UNDERTOW-278 Fix thread safety issue in web socket send