libGGI make dist failures

[Thayne Harbaugh]

Now that I have the make "dist" targets working (in my tree, haven't
checked them in because of code freeze) I'm finding some problems with
libggi building.

The file "visual.inc" is missing from the EXTRA_DIST target in
libggi/display/X/Makefile.am

The file "ipc.h" is missing from the ggiinclude_HEADERS target in
libggi/include/ggi/display/Makefile.am

I won't commit these two changes nor my "make dist" fixes due to the
free.  Let me know if you want them.

-- 
Thayne Harbaugh