cygport file attached.

The only notable change from Yaakov's cygport file is that upstream has changed 
their library versioning scheme.  Previously the DLL was cygmypaint-1-3-0.dll 
and the library package was called libmypaint1.3_0.  Now the DLL is 
cygmypaint-0.dll, so I've called the library package libmypaint0.

This was a deliberate change, with much upstream discussion, so I don't think I 
should mess with it.

Ken