vc.el no longer recognizes files in an arch working directory

[Miles Bader]

Using current CVS (emacs -Q), if I visit a file in an arch working
directory, vc.el doesn't seem to recognize that:  no modeline indicator,
vc commands give an error "File ... is not under version control".

This used to work just fine of course.

It still works OK with files in a CVS working directory however.

-Miles
-- 
If you can't beat them, arrange to have them beaten.  [George Carlin]