changegroup: add version argument to getlocalchangegroup

For some obscure reasons (probably upsetting a Greek goddess),
getlocalchangegroup did not have a 'version' argument to control the
changegroup version. We fix this to allow cg02 to be used with 'hg
bundle' in the future.

mercurial/changegroup.py

@@ -615,14 +615,15 b' def getlocalchangegroupraw(repo, source,'
     bundler = packermap[version][0](repo, bundlecaps)
     return getsubsetraw(repo, outgoing, bundler, source)
 
-def getlocalchangegroup(repo, source, outgoing, bundlecaps=None):
+def getlocalchangegroup(repo, source, outgoing, bundlecaps=None,
+                        version='01'):
     """Like getbundle, but taking a discovery.outgoing as an argument.
 
     This is only implemented for local repos and reuses potentially
     precomputed sets in outgoing."""
     if not outgoing.missing:
         return None
-    bundler = cg1packer(repo, bundlecaps)
+    bundler = packermap[version][0](repo, bundlecaps)
     return getsubset(repo, outgoing, bundler, source)
 
 def computeoutgoing(repo, heads, common):