fix workDir argument. change public to private
Add a ChangelogCommand test to GitAPITestCase

The changelog() method returns no content from JGit, even though the
same method from CGit returns the expected content.  Rather than allow
that significant difference in behavior to distract from other work,
this test only executes on CGit.
Merge pull request #66 from MarkEWaite/master-add-getTagNames-no-filter-test

Add test of getTagNames with no filter
Merge pull request #65 from MarkEWaite/master-add-clone-command-tests

Master add clone command tests
Merge pull request #64 from MarkEWaite/master-add-lsTree-test

Add test of deprecated lsTree method
Merge pull request #53 from MarkEWaite/master-add-changelog-tests

Add test of the changelog() method
Merge pull request #48 from thirota/refactorLaunchCommandIn

fix workDir argument. change public to private
Merge remote-tracking branch 'upstream/master' into master-work