Allow factory override in make_config()

also add `winsvc` param for `get_config_paths()` to support
RattailFileMonitor service on windows

tests/test_conf.py

@@ -417,6 +417,18 @@ class TestGenericDefaultFiles(TestCase):
                 self.assertEqual(len(files), 0)
 
 
+class TestGetConfigPaths(FileConfigTestCase):
+
+    def test_winsvc(self):
+        myconf = self.write_file('my.conf', """
+[wutta.config]
+winsvc.RattailFileMonitor = /path/to/other/file
+""")
+
+        files = conf.get_config_paths(files=[myconf], winsvc='RattailFileMonitor')
+        self.assertEqual(files, ['/path/to/other/file'])
+
+
 class TestMakeConfig(FileConfigTestCase):
 
     # nb. we use appname='wuttatest' in this suite to avoid any