VC mode bug with SVN: can't register files

[Ted Zlatanov]

vc-registered returns t for unregistered SVN files, because
vc-svn-registered returns 'unregistered which is not nil.  This patches
vc-svn-registered to return nil in that case.

This fixes it, but a) I don't know if it's the right fix, and b) it may
need to be done for other backends as well, so 'unregistered may need to
be handled in vc-registered.  Since VC mode is in flux I didn't spend
more time on this or commit a fix, figuring it was better to report it.

Ted

Index: lisp/vc-svn.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/vc-svn.el,v
retrieving revision 1.59
diff -u -r1.59 vc-svn.el
--- lisp/vc-svn.el      2 Jan 2008 00:42:36 -0000       1.59
+++ lisp/vc-svn.el      4 Jan 2008 16:02:03 -0000
@@ -132,7 +132,10 @@
                ;; an `error' by vc-do-command.
                (error nil))))
         (when (eq 0 status)
-          (vc-svn-parse-status file))))))
+          (let ((svn-status (vc-svn-parse-status file)))
+           (if (eq svn-status 'unregistered)
+               nil                                               
+             svn-status)))))))                                   
                                                                  
 (defun vc-svn-state (file &optional localp)                      
   "SVN-specific version of `vc-state'."