Missing xorg header files

[Christian Fredrik Kalager Schaller]

Hi,
I am trying to make a RPM for NVU (the mozilla based webeditor from
linspire), but the compilation fails with due to missing:
X11/extensions/Print.h

Googling I find other people mentioning the that the headers are missing
but no reply on why or when they can be expected to be back. Or if they
are gone for good and app developers need to stop using them.

Hope someone here can provide some insight.

Christian