Wireshark dissector update

I have some good news.  With some significant help from Alexis La Goutte the HTTP/2 Wireshark dissector has been greatly enhanced, is now part of the trunk code line, and has been updated for draft 6.  It is not yet performing header decompression but most everything else is in there.

Sync, config, build, and start debugging HTTP/2.0.

For quick and easy reference to the source:

http://www.wireshark.org/docs/wsdg_html_chunked/ChSrcObtain.html

-stephen