mq: expand qimport summary

hgext/mq.py

@@ -1998,7 +1998,7 b' def unapplied(ui, repo, patch=None, **op'
           ('P', 'push', None, _('qpush after importing'))],
          _('hg qimport [-e] [-n NAME] [-f] [-g] [-P] [-r REV]... FILE...'))
 def qimport(ui, repo, *filename, **opts):
-    """import a patch
+    """import a patch or existing changeset
 
     The patch is inserted into the series after the last applied
     patch. If no patches have been applied, qimport prepends the patch

tests/test-mq.t

@@ -70,7 +70,7 b' help'
    qgoto         push or pop patches until named patch is at top of stack
    qguard        set or print guards for a patch
    qheader       print the header of the topmost or specified patch
-   qimport       import a patch
+   qimport       import a patch or existing changeset
    qnew          create a new patch
    qnext         print the name of the next pushable patch
    qpop          pop the current patch off the stack