ncurses 5.7 - patch 20081206

+ move del_curterm() call from _nc_freeall() to _nc_leaks_tinfo() to
  work for progs/clear, progs/tabs, etc.
+ correct buffer-size after internal resizing of wide-character
  set_field_buffer(), broken in 20081018 changes (report by Mike Gran).
+ add "-i" option to test/filter.c to tell it to use initscr() rather
  than newterm(), to investigate report on comp.unix.programmer that
  ncurses would clear the screen in that case (it does not - the issue
  was xterm's alternate screen feature).
+ add check in mouse-driver to disable connection if GPM returns a
  zero, indicating that the connection is closed (Debian #506717,
  adapted from patch by Samuel Thibault).