Make port numbers optional in the client
UNDERTOW-231 Allow for empty close message
changes to the way path matching works

added trailing slash removal
added shared path normalizing (leading and trailing slashes)
added test cases for path matcher

these modifications should ensure that novice users of the embedded api don't run into problems with trailing slashes on the path handler
UNDERTOW-236 Setting the content length after the response has started does not make the ServletOutputStream automatically close
Fix bug in servlet Writer fast path

Also change the behaviour of the fixed length channel to fully write out as much as possible, and only throw an exception if the remaining is zero.
WFLY-3261 Make sure login page is not cached
Diable caching for secured resources by default
Merge branch 'master' of https://github.com/undertow-io/undertow