hg: make "_outgoing()" return peer object for remote repository

This patch makes "_outgoing()" return peer object for remote
repository, to avoid re-execution "expandpath()", "parseurl()", and
"peer()" on caller side for specified URL.

mercurial/commands.py

@@ -4353,7 +4353,7 b' def outgoing(ui, repo, dest=None, **opts'
     """
     if opts.get('graph'):
         cmdutil.checkunsupportedgraphflags([], opts)
-        o = hg._outgoing(ui, repo, dest, opts)
+        o, other = hg._outgoing(ui, repo, dest, opts)
         if not o:
             return
 

mercurial/hg.py

@@ -585,7 +585,7 b' def _outgoing(ui, repo, dest, opts):'
     o = outgoing.missing
     if not o:
         scmutil.nochangesfound(repo.ui, repo, outgoing.excluded)
-    return o
+    return o, other
 
 def outgoing(ui, repo, dest, opts):
     def recurse():
@@ -598,7 +598,7 b' def outgoing(ui, repo, dest, opts):'
         return ret
 
     limit = cmdutil.loglimit(opts)
-    o = _outgoing(ui, repo, dest, opts)
+    o, other = _outgoing(ui, repo, dest, opts)
     if not o:
         return recurse()