i18n: make column positioning message of MQ summary output translatable

Before this patch, one of column positioning messages of MQ summary
output is not translatable, and patches are always listed up at fixed
column position like below, when patch queue is not empty:

    mq:     1 applied, 1 unapplied

But column positioning messages for other summarized information are
translatable, so other information may be displayed at different
column position on non-English locale environments.

This patch makes column positioning message of MQ summary output
translatable.

hgext/mq.py

@@ -3561,7 +3561,8 b' def summary(orig, ui, repo, *args, **kwa'
     if u:
         m.append(ui.label(_("%d unapplied"), 'qseries.unapplied') % u)
     if m:
-        ui.write("mq:     %s\n" % ', '.join(m))
+        # i18n: column positioning for "hg summary"
+        ui.write(_("mq:     %s\n") % ', '.join(m))
     else:
         # i18n: column positioning for "hg summary"
         ui.note(_("mq:     (empty queue)\n"))

tests/test-check-code-hg.t

@@ -62,9 +62,6 b''
   hgext/hgk.py:0:
    >     ui.write("tree %s\n" % short(ctx.changeset()[0]))
    warning: unwrapped ui message
-  hgext/mq.py:0:
-   >         ui.write("mq:     %s\n" % ', '.join(m))
-   warning: unwrapped ui message
   hgext/patchbomb.py:0:
    >             ui.write('Subject: %s\n' % subj)
    warning: unwrapped ui message