+ modify _nc_panelhook() data to account for a permanent memory leak.
+ fix memory leaks in test/demo_menus
+ fix most warnings from Klocwork tool (report by Larry Zhou).
+ modify configure script CF_XOPEN_SOURCE macro to add case for
"dragonfly" from xterm #236 changes.
+ modify configure script --with-hashed-db to let $LIBS override the
search for the db library (prompted by report by Samson Pierre).
+ 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.
