Pushed build 234 to github (snortadmin/snort3):
- byte_math: port rule option from 2X and add feature documentation
- pgm: don't calculate checksum if header length is not divisible by 4
- appid: fix sip event handling, http pattern lists, thread locals
- build: fix issues with OpenSolaris and FreeBSD builds
- cmake: fix issues with libpcap and miscellaneous
- offload: refactor for initial (experimental) version of regex offload to other threads
- cmg: revamp hex buffer dump format with 16 or 20 bytes per line
- rules: reject positional parameters containing spaces
