The revamped options handling was't doing dynamic help properly.
After listing the booleans, it listed them again amongest the
compound options. Since their description field is Null, that
could be a big problem. sprintf(buf,"%s",NULL) on OSX produces
"(null)" but most sprintf()'s would probably crash instead.
The 'other' options (autopickup exceptions, menucolors, &c) were
not listed at all. (I don't remember whether that was also the
case before the revamp.) Now they're listed but not explained.
The 'msg_window' description was unhelpful; this replaces it.
A couple of others were longer than necessary so they've been
shortened. The rest of optlist.h is reformatting wide lines.
Recently added 'safe_wait' option was included in the Guidebook
but not in dat/opthelp; add it.
ec153a27bd