test-shelve: be more lenient about whitespace (issue4124)

When running on a slower systems (eg. MIPS buildd), the age of the
shelf can be 10 seconds or more, resulting in the output alignment
changing and thus a test failure. This patch makes the spacing be
matched more leniently.

tests/test-shelve.t

@@ -81,11 +81,11 b' the common case - no options or filename'
 ensure that our shelved changes exist
 
   $ hg shelve -l
-  default-01      (*)    changes to '[mq]: second.patch' (glob)
-  default         (*)    changes to '[mq]: second.patch' (glob)
+  default-01      (*)* changes to '[mq]: second.patch' (glob)
+  default         (*)* changes to '[mq]: second.patch' (glob)
 
   $ hg shelve -l -p default
-  default         (*)    changes to '[mq]: second.patch' (glob)
+  default         (*)* changes to '[mq]: second.patch' (glob)
   
   diff --git a/a/a b/a/a
   --- a/a/a