ncurses 5.6 - patch 20070317

+ ignore --with-chtype=unsigned since unsigned is always added to
  the type in curses.h; do the same for --with-mmask-t.
+ change warning regarding --enable-ext-colors and wide-character
  in the configure script to an error.
+ tweak error message in CF_WITH_LIBTOOL to distinguish other programs
  such as Darwin's libtool program (report by Michail Vidiassov)
+ modify edit_man.sh to allow for multiple substitutions per line.
+ set locale in misc/ncurses-config.in since it uses a range
+ change permissions libncurses++.a install (report by Michail
  Vidiassov).
+ corrected length of temporary buffer in wide-character version
  of set_field_buffer() (related to report by Bryan Christ).