Fixed problem with Hg backend not displaying files and directories

inside another directory when the path does not end with a slash.

pyvcs/backends/hg.py

@@ -69,6 +69,12 @@ def list_directory(self, path, revision=None):
         Returns a list of files in a directory (list of strings) at a given
         revision, or HEAD if revision is None.
         """
+        # Add an ending slash to path, otherwise the file
+        # names start with it, also it does not list files
+        # inside another folder
+        if path and path[-1] != os.path.sep:
+            path += os.path.sep
+
         chgctx = self.repo.changectx(revision or 'tip')
         file_list = []
         folder_list = set()