Mostly, treat HTTP0.9 completely separate. Because we're doing raw
delivery of a body directly, fake enough (connection_close=1, and finish
headers manually) so that the MIME infrastructure thinks it is seeing a
body.
This deals better with the body due to accounting for the first line. Also
it avoids the content line analyzer to strip CRLF/LF and the analyzer
then adding CRLF unconditionally by fully bypassing the content line
analyzer.
Concretely, the vlan-mpls test case contains a HTTP response with LF only,
but the previous implementation would use CRLF, accounting for two many bytes.
Same for the http.no-version test which would previously report a body
length of 280 and now is at 323 (which agrees with wireshark).
Further, the mime_type detection for the http-09 test case works because
it's now seeing the full body.
Drawback: We don't extract headers when a server actually replies with
a HTTP/1.1 message, but grrr, something needs to give I guess.
This changes the HTTP log format slightly but shouldn't mess
up anything that anyone was doing because the old "filename"
field was never actually filled out. Tests are updated as well.
The change from #49 made it an error to not have a URI. That however
then led requests with an URI yet no version to abort as well.
Instead, we now check if the token following the method is an "HTTP/"
version identifier. If, so accept that the URI is empty (and trigger
a weird) but otherwise keep processing.
Adding test cases for both HTTP requests without URI and without
version.
