Snort++ Update

Pushed build 237 to github (snortadmin/snort3):

• build: add support for appending EXTRABUILD to the BUILD string
• build: clean up some ICC 2017 warnings
• build: clean up some GCC 7 warnings
• build: support OpenSSL 1.1.0 API
• build: clean up some cppcheck warnings
• appid: port some missing 2.9.X FEAT_OPEN_APPID code
• appid: fix thread-unsafe sharing of HTTP pattern tables
• DAQ: fix leaking instance memory when configure fails
• daq_hext and daq_file: pass PCI via query method
• icmp6: reject non-ip6, raise 116:474
• http_inspect: header normalization improvements
• http_inspect: port fixes for UTF decoding
• http_inspect: added 119:87 - 119:90 for expect / continue issues
• http_inspect: added 119:91 for Transfer-Encoding header not valid for HTTP 1.0
• http_inspect: added 119:92 for Content-Transfer-Encoding
• http_inspect: added 119:93 for issues with chunked message trailers
• PDF decompression: fix missing reset in state machine transition
• ftp_server: implement splitter to improve EOF processing
• port_scan: merge global settings into main module and other improvements
• perf_monitor: add JSON formatter
• ssl: add splitter to improve PDU processing
• detection: fix segfault in DetectionEngine::idle sans thread_init
• rules: tolerate spaces in positional parameters
  thanks to Joao Soares for reporting the issue
• ip and tcp options: fix max length handling and clean up logging
• cmg: improved alert formatting
• doc: updates re control channel
• snort2lua: added line number and file name to error output
• snort2lua: fix removal of ignore_ports in stream_tcp.small_segments
• snort2lua: fix heap-use-after-free for preprocessors and configs with no arguments
• snort2lua: update for port_scan

 It's been a while since posting here but we have been pushing to github multiple times per week.  :)