Fix the issue of Intent.equals() and Intent.hashCode()
- Fix the bug that Intent.equals() does not respect packageName
- Fix the bug that Intent.hashCode() does not respect packageName
- Fix the bug that Intent.hashCode() does not respect categories
- Add test cases accordingly
Removed unused method.
Merge pull request #632 from thorikawa/fix-intent-equals-and-hashCode

Fixed the issue of Intent.equals() and Intent.hashCode()