+ continue integrating "sp-funcs" by Juergen Pfeifer (incomplete).
This change finishes merging for menu and panel libraries, does
part of the form library.
+ modify the support for filesystems which do not support mixed-case to
generate 2-character (hexadecimal) codes for the lower-level of the
filesystem terminfo database (request by Michail Vidiassov).
+ add configure option --enable-mixed-case, to allow overriding the
configure script's check if the filesystem supports mixed-case
filenames.
+ add wresize() to C++ binding (request by Chris Lee).
+ define NCURSES_EXT_FUNCS and NCURSES_EXT_COLORS in curses.h to make
it simpler to tell if the extended functions and/or colors are
declared.
