ncurses 5.6 - patch 20070224

ncurses 5.6 - patch 20070224

+ change internal return codes of _nc_wgetch() to check for cases
  where KEY_CODE_YES should be returned, e.g., if a KEY_RESIZE was
  ungetch'd, and read by wget_wch().
+ fix static-library build broken in 20070217 changes to remove "-ldl"
  (report by Miroslav Lichvar).
+ change makefile/scripts for cygwin to allow building termlib.
+ use Form_Hook in manpages to match form.h
+ use Menu_Hook in manpages, as well as a few places in menu.h
+ correct form- and menu-manpages to use specific Field_Options,
  Menu_Options and Item_Options types.
+ correct prototype for _tracechar() in manpage (cf: 20011229).
+ correct prototype for wunctrl() in manpage.