It turned out that using '^' as a group accelerator (new behavior for
the 'whatis' command to view traps) already worked for curses and Qt.
Fix that for tty and X11. I don't know the situation for WinGUI.
Offering any of the menu paging keystrokes as group accelerators
should be avoided if there's any chance that the menu will need more
that one page. The menu for '/' is short though so losing "^ to go
back to first page" for it isn't an issue.
2476329b2c