Log Message:
hunspell: update to 1.7.2

* Crash fixes, code clean-up in ~200 commits
* tdf#136306 don't accept/suggest typos as 3-or-more-word compound
  words
* Prepare optional spelling mode of LibreOffice to not accept/suggest
  not dictionary-based words as compound words (#517)
* Merge in weblate translations

While here:
Fix libcurses detection on NetBSD.
However, switch to ncursesw to get Unicode support, hunspell
doesn't recognize wide character support in NetBSD curses.