- Improve pointer/int compatibility
- Include unpublished Dt headers in Dt
- Use <Xm/XmPrivate.h> for unpublished Motif functions
There are still warnings left generated because
ElementValue.parsed_value should really be a union.
There are also some warnings left because of XtPointer
casting and some unused variables and functions.
Mostly this is adding appropriate #includes and declarations,
but for WmImage.c we also change from using the proper name
for XmeGetMask, rather than the identical but renamed
version _DtGetMask which is not exported in any header.