- ncurses-screen.patch replaced by ncurses-meta.patch: more terminals

- ncurses-screen.patch replaced by ncurses-meta.patch: more terminals
  use 8th bit for extended charset and not meta, i.e. screen, xterm,
  rxvt, Eterm, teraterm. Anything else?
  epic is an example of a program which misbehaves with wrong setting
  here (can't enter 8bit chars if configured to take this property from
  terminfo).
- Release 20.

Changed files:
    ncurses-meta.patch -> 1.1
    ncurses-screen.patch -> 1.2
    ncurses.spec -> 1.78