[Pixman] pixman-combine32.h header: should it be made public?

[Yuri]

While porting Aseprite project (http://www.aseprite.org) to FreeBSD, I 
noticed that they use the private pixmap header pixman-combine32.h (they 
took pixman source tree from GitHub).

When I look at this header, I see that it has some generally useful 
macros for the pixel data manipulation.

Would you support making pixman-combine32.h a public header? Because 
people who want to use these macros will copy this header into their 
trees, and this isn't too good.

Yuri