+ update html documentation.
+ add -m and -s options to test/keynames.c and test/key_names.c to test
the meta() function with keyname() or key_name(), respectively.
+ correct return value of key_name() on error; it is null.
+ document some unresolved issues for rpath and pthreads in TO-DO.
+ fix a missing prototype for ioctl() on OpenBSD in tset.c
+ add configure option --disable-tic-depends to make explicit whether
tic library depends on ncurses/ncursesw library, amends change from
20080823 (prompted by Debian #501421).
+ 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).
