> 
>    1.	Move the files that are likely to be modified
> 	by the end user to a new set "xetc.tgz", and
> 	only install these files in with "make distribution"
> 	instead of "make install".
> 	Enhance postinstall and etcupdate to support upgrading
> 	changed files as necessary.
> 	I've attached a list of files that I've identified
> 	that are candidates for this.
> 	This is my preferred solution.

This one sounds the best to me. At least currently where we live with 
installs via sets this best follows existing practices and tools. Also it
brings X more in line with the rest of the tree which is what the whole cross
build was doing also.

James