ncurses 5.6 - patch 20071117

ncurses 5.6 - patch 20071117

+ 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.