ncurses 5.9 - patch 20120324

+ amend an old fix so that next_char() exits properly for empty files,
  e.g., from reading /dev/null (cf: 20080804).
+ modify tic so that it can read from the standard input, or from
  a character device.  Because tic uses seek's, this requires writing
  the data to a temporary file first (prompted by remark by Sven
  Joachim) (cf: 20000923).