[PATCH] Support for location in revno

[Michael Ellerman]

Hi,

Trivial patch to allow revno to take a location.

cheers

=== modified file 'bzrlib/builtins.py'
--- bzrlib/builtins.py
+++ bzrlib/builtins.py
@@ -157,9 +157,10 @@
     """Show current revision number.
 
     This is equal to the number of revisions on this branch."""
-    @display_command
-    def run(self):
-        print Branch.open_containing(u'.')[0].revno()
+    takes_args = ['location?']
+    @display_command
+    def run(self, location=u'.'):
+        print Branch.open_containing(location)[0].revno()
 
 
 class cmd_revision_info(Command):