perf: make measuring foldmap perf work again
Rev
25c1d3ca5ff6 split the foldmap into two, but I forgot to update perf for
the changes.
to build a new macosx binary package:
install macpython from http://www.python.org/download/mac
install py2app from http://pythonmac.org/packages/
make sure /usr/local/bin is in your path
run bdist_mpkg in top-level hg directory
find packaged stuff in dist directory