John Cupitt 8f364a8b51 rename some _get funcs
all the _get_ funcs that returned a bool have become _isthing()
functions, eg.

vips_object_argument_get_assigned() ->
  vips_object_argument_isset()
2012-11-09 13:08:59 +00:00
..
2012-11-09 13:08:59 +00:00
2009-08-16 15:00:08 +00:00