util: don't assume that converted rev is an svn rev Summary: In repos where converted revisions come from different sources it's not nice of hgsubversion to assume that all converted rev are coming from SVN. Test Plan: Ran all current tests, nothing is broken. Not sure how to test new behaviour withour much overhead. I suppose I could write something that overrides commit extras

import test_util

import unittest

class TestFetchBinaryFiles(test_util.TestBase):
    stupid_mode_tests = True

    def test_binaryfiles(self):
        repo = self._load_fixture_and_fetch('binaryfiles.svndump')
        self.assertEqual('cce7fe400d8d', str(repo['tip']))