ncurses 6.0 - patch 20151219

+ add a paragraph to curs_getch.3x discussing key naming (discussion
  with James Crippen).
+ amend workaround for Solaris vs line-drawing to take the configure
  check into account.
+ add a configure check for wcwidth() versus the ncurses line-drawing
  characters, to use in special-casing systems such as Solaris.