Log Message:
update to ircII 20190116.  changes include:

  o  new /lastlog commands -saveall and -loadall that save and load the
     current window's lastlog, allowing session restoring
  o  new REFRESH_WINDOW_LASTLOG binding that will fully redraw the
     current window, using data from the lastlog, leaving it in a
     scrollable manner
  o  fix run-time errors on macOS
  o  ircII is now cross compileable
  o  add a basic help2html.pl script that converts the help pages into
     (poorly so far) formatted html pages, many help issues pages fixed
  o  restore case-insensitive /lastlog, accidentally broken in 20161207
  o  fix input line scrolling problem where it would not keep any of the
     existing input line.