(Needs a libcurses fix as well).
No need to ponce about with __m_endwin (to remember we've done endwin()),
the old recovery was wrong in any case - but I've left something that
will do an explicit redraw.
Allow the 'help' text to be from a variable (and hence translated).
Fix the display of help so that the screen underneath is actually cleared.
Preserve the screen contents while displaying help - redraw is too hard.
Use endwin(); doupdate(); to do the full refresh when ^L is typed.
Move menus up the screen if they would hit the bottom with too few lines
to show an item and the scroll text (happens with big titles).
Make 'y=0' center the window vertically - use of 0 means you can't have
a menu starting on the topline, but this is unlikely to be a problem.
Make all the menu options settable from the control file, not just from
dynamic menus.
Redo menu option list part of man page.
Make y == -1 => after current messages (if msg_defs.h included).
Defer menu initialisation until after post_act() called (so function can
fiddle with more things.)
with that menu. The help screen is scrollable for long help screens.
The char '?' accesses the help screen as a menu command. Help screen text
is specified in the menu definition file with the menu.
dsl