bundle2: localize handleoutput remote prompts

Code archaeology suggests that there was no good reason for this not to
be localized. 'remote: ' is already localized elsewhere.

mercurial/bundle2.py

@@ -1471,7 +1471,7 b' def handlecheckheads(op, inpart):'
 def handleoutput(op, inpart):
     """forward output captured on the server to the client"""
     for line in inpart.read().splitlines():
-        op.ui.status(('remote: %s\n' % line))
+        op.ui.status(_('remote: %s\n') % line)
 
 @parthandler('replycaps')
 def handlereplycaps(op, inpart):