Only one package (lyx) on my machine makes use of /usr/X11R6/share. I do not find this directory mentioned in the fsstd, but it seems the logical place for architecture-independant data for X11 programs.
Is using this directory specifically forbidden? Or is it okay for a program to be in /usr/X11R6/bin and its data to be in /usr/share/<packagename>/* I plan on putting the gnome-apt resource files under /usr/X11R6/share unless somebody objects. -Mitch