am f6a2503d: am 5adae45a: Merge "Document the behavior of \'null\' values in...
am f6a2503d: am 5adae45a: Merge "Document the behavior of \'null\' values in SharedPreferences" into jb-mr2-dev
* commit 'f6a2503d':
Document the behavior of 'null' values in SharedPreferences