keyword: allow keyword expansion on clone

If [keyword] filename patterns are specified in a global hgrc
keywords will be expanded in clone.

This behaviour is more consistent but also more dangerous.
Specifying global, and thus more complicted, [keyword] patterns
might slow things down as well.
Mention this in help?

hgext/keyword.py

@@ -410,10 +410,9 b' def reposetup(ui, repo):'
     if not repo.local():
         return
 
-    nokwcommands = ('add', 'addremove', 'bundle', 'clone', 'copy',
-                    'export', 'grep', 'identify', 'incoming', 'init',
-                    'log', 'outgoing', 'push', 'remove', 'rename',
-                    'rollback', 'tip',
+    nokwcommands = ('add', 'addremove', 'bundle', 'copy', 'export', 'grep',
+                    'identify', 'incoming', 'init', 'log', 'outgoing', 'push',
+                    'remove', 'rename', 'rollback', 'tip',
                     'convert')
     hgcmd, func, args, opts, cmdopts = dispatch._parse(ui, sys.argv[1:])
     if hgcmd in nokwcommands: