Bug 945152 - Part 3-1: New libjar APIs. r=aklotz
Bug 945152 - Part 3-2: XHR changes for mapped array buffer. r=smaug
Bug 945152 - Part 3-3: Test case to get array buffor by XHR with jar:// URL. r=smaug
Bug 945152 - Part 3-4: Test case to get array buffor by XHR with app:// URL. r=smaug,fabrice