+ remove a redundant NCURSES_EXPORT as a build-fix for "Maarten
Anonymous".
+ merge/adapt in-progress work by Juergen Pfeifer for new version of
win32-driver.
+ modify configure script, moving gcc -Werror options to EXTRA_CFLAGS
to avoid breaking configure-checks (adapted from ongoing work on
mawk and lynx).
> errate for terminfo.src (report by Florian Weimer):
+ correct icl6404 csr
+ correct ti916 cup
+ improve ndr9500
