perf: rename version flag of perfchangegroupchangelog to cgversion

The version flag conflicts with the global version flag and does not work.

Differential Revision: https://phab.mercurial-scm.org/D5297
Differential Revision: https://phab.mercurial-scm.org/D5298

contrib/perf.py

@@ -712,9 +712,9 b' def perfbundleread(ui, repo, bundlepath,'
         fm.end()
 
 @command(b'perfchangegroupchangelog', formatteropts +
-         [(b'', b'version', b'02', b'changegroup version'),
+         [(b'', b'cgversion', b'02', b'changegroup version'),
           (b'r', b'rev', b'', b'revisions to add to changegroup')])
-def perfchangegroupchangelog(ui, repo, version=b'02', rev=None, **opts):
+def perfchangegroupchangelog(ui, repo, cgversion=b'02', rev=None, **opts):
     """Benchmark producing a changelog group for a changegroup.
 
     This measures the time spent processing the changelog during a
@@ -727,7 +727,7 b' def perfchangegroupchangelog(ui, repo, v'
     opts = _byteskwargs(opts)
     cl = repo.changelog
     nodes = [cl.lookup(r) for r in repo.revs(rev or b'all()')]
-    bundler = changegroup.getbundler(version, repo)
+    bundler = changegroup.getbundler(cgversion, repo)
 
     def d():
         state, chunks = bundler._generatechangelog(cl, nodes)

tests/test-contrib-perf.t

@@ -145,6 +145,7 b' perfstatus'
   $ hg perfbranchmap
   $ hg perfcca
   $ hg perfchangegroupchangelog
+  $ hg perfchangegroupchangelog --cgversion 01
   $ hg perfchangeset 2
   $ hg perfctxfiles 2
   $ hg perfdiffwd