* x-dnd.el (x-dnd-test-function, x-dnd-get-state-cons-for-frame)

* x-dnd.el (x-dnd-test-function, x-dnd-get-state-cons-for-frame)
  (x-dnd-get-state-for-frame, x-dnd-handle-moz-url)
  (x-dnd-handle-uri-list, x-dnd-choose-type, x-dnd-get-drop-width-height)
  (x-dnd-init-motif-for-frame): Fix typos in docstrings.
  (x-dnd-drop-data, x-dnd-types-alist, x-dnd-default-test-function):
  Reflow docstrings.