Change the version number and added one test in SampleActivity
Reverting to commit 7871607d40d125b9212acf0f20f4ea22c77de8da
Cherry-picking a few bits of the experimental ambiguous columns fix.
Regenerated the sample with current code.
Rename ambiguous columns.
Reuse the getFieldsIncludingJoins method that already existed.
Added joined tables to selection classes.
Changed the name of the bundle file.
Fixed doc about the BaseColumns.
Minor README changes.
Merge branch '1.8.1'