ncurses 5.7 - patch 20091205

ncurses 5.7 - patch 20091205

+ correct layout of working window used to extract data in
  wide-character configured by set_field_buffer (patch by Rafael
  Garrido Fernandez)
+ improve some limit-checks related to filename length in reading and
  writing terminfo entries.
+ ensure that filename is always filled in when attempting to read
  a terminfo entry, so that infocmp can report the filename (patch
  by Nicholas Marriott).