+ add configure script --enable-sp-funcs to enable the new set of
extended functions.
+ start integrating patches by Juergen Pfeifer:
+ add extended functions which specify the SCREEN pointer for several
curses functions which use the global SP (these are incomplete;
some internals work is needed to complete these).
+ add special cases to configure script for MinGW port.
+ modify wgetch() to use the screen which corresponds to its window
parameter rather than relying on SP; some dependent functions still
use SP internally.
+ factor out most use of SP in lib_mouse.c, using parameter.
+ add internal _nc_keyname(), replacing keyname() to associate with a
particular SCREEN rather than the global SP.
+ add internal _nc_unctrl(), replacing unctrl() to associate with a
particular SCREEN rather than the global SP.
+ add internal _nc_tracemouse(), replacing _tracemouse() to eliminate
its associated global buffer _nc_globals.tracemse_buf now in SCREEN.
+ add internal _nc_tracechar(), replacing _tracechar() to use SCREEN in
preference to the global _nc_globals.tracechr_buf buffer.
+ modify screen.* terminfo entries using new screen+fkeys to fix
overridden keys in screen.rxvt (Debian #478094) -TD
+ modify internal interfaces to reduce wgetch()'s dependency on the
global SP.
+ simplify some loops with macros each_screen(), each_window() and
each_ripoff().
+ continue modifying test/ditto.c toward making it demonstrate
multithreaded use_screen(), using fifos to pass data between screens.
+ fix typo in form.3x (report by Mike Gran).
+ add new functions to lib_trace.c to setup mutex's for the _tracef()
calls within the ncurses library.
+ for the reentrant model, move _nc_tputs_trace and _nc_outchars into
the SCREEN.
+ start modifying test/worm.c to provide threading demo (incomplete).
+ separated ifdef's for some BSD-related symbols in tset.c, to make
it compile on LynxOS (report by Greg Gemmer).
