Get rid of the httptag enum, we can use the HTTP_T values instead.

Introduce WSP macro to wrap log entries which has a session.

Add our own vctyp() character classifier to simplify HTTP protocol
message parsing.

Unify http_DissectRequest() and http_DissectResponse() processing.

Unify writing of the 5 byte SHMLOG header and other minor cleanups
to shmlog code.

Silence some signed/unsigned/int width warnings in FlexeLint






git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2056 d4fa192b-c00b-0410-8231-f00ffab90ce4