Log Message:
rterm: make this build on NetBSD/macppc specifically....

...and hopefully on other 32-bit ports:

 * Avoid trying to do `u64 * u32`, as rust may not implement that
   on 32-bit ports (it doesn't on 32-bit powerpc).
 * Fix type mismatch between variable and funciton parameter.
 * Fix XChangeWindowAttributes parameter declaration to match (u64
   -> c_ulong).

Bump PKGREVISION.