Comment 4 for bug 129299

Hmm, there are explicit tests for plugin.load_from_path, which is what is failing.

See for instance bzrlib.tests.test_plugins.TestLoadingPlugins

we can either test that BZR_PLUGIN_PATH when split gets rid of trailing slashes, or we can test that load_from_path works given a path like ['foo/'].

No need for blackbox or subprocess voodoo.