A long overdue update of cscope.files. This was generated with the

A long overdue update of cscope.files.  This was generated with the
following command:

  echo -q >cscope.files && find -name '*.[ch]' -o -name '*.cxx' |sort >>cscope.files

The sorting is to make sure that future updates show a more consistant
diff between versions in CVS.

(note: it may be worthwhile to add a 'cscope' target to the Makefile, and
 stop storing a static cscope.files list in CVS...)