Menu hackery: change a couple of menu entry names on OSX to
control where they end up.
Move nethack's 'O' command from its hijacked position (due to name
"Options") of "nethack->Preferences..." to "Game->Run-time options".
Move persistent Qt settings on OSX from "Game->Qt settings" to
"nethack->Preferences...".
The Qt settings dialog (now accessed as Preferences...) desperately
needs a title and/or other explanatory text but I haven't figured
out how do to that. The values set with it are persistent, with
apparently quite a few choices for where to save them for future
runs. I used it to increase the size of text in the status window,
and found my settings stored in binary file
~/Library/Preferences/org.nethack.NetHack.plist
The subdirectories ~/Library and ~/Library/Preferences are
standard OSX per-user things. The file name is derived from values
set up in main routine: qt_main.cpp is setting OrganizationDomain
to "nethack.org" and ApplicationName to "NetHack". I've added a
value for ApplicationVersion but don't know whether anything cares
about it.