Make the thread bus holders final so the jit can optimize the accesses better.

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1541140 13f79535-47bb-0310-9956-ffa450edef68
[CXF-5368] Check for both filename and name in Content-Disposition

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1541141 13f79535-47bb-0310-9956-ffa450edef68
Make sure the validation dep is marked optional

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1541142 13f79535-47bb-0310-9956-ffa450edef68