* extra/upstart-file-bridge.c:
  - create_handler(): Use original_file() for directories
    (LP: #1221466, #1222702).
  - watched_dir_new(): Additional assert.
  - watched_file_new():
    - Additional assert.
    - Store original directory path in file object to ensure reliable
      matching for directories.
* scripts/tests/test_pyupstart_session_init.py: Added file bridge tests
  for directory creation, modification and deletion.