Fix 'module id' test.

	modified:   lib/blues_brothers.js
Fix 'package module id' test.

	modified:   lib/elevations.js
Fix 'synchronous loading and evaluation' test.

	modified:   lib/distances.js
Fix 'module closures' test.

	modified:   lib/lost_cities.js
Fix 'circular dependencies' test.

	modified:   lib/our_town.js
Fix 'module cache' test.

	modified:   lib/rebuild_san_francisco.js