DND: > 3 data types are now supported.
DND: > 3 data types are now supported.

* Reorganized some code
* > 3 data types are now supported. XdndTypeList is now correctly set
  for the source window.

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI