Do not stop processing request headers if C-L is invalid. Processing will now stop after the REQUEST_HEADERS hook. New flags: HTP_REQUEST_INVALID and HTP_REQUEST_INVALID_C_L.
Add more tests for invalid requests.
Change all hooks to use htp_tx_t references (instead of htp_connp_t references).
Fix HTP_MULTI_PACKET_HEAD when processing requests with trailers.
Tidy up.