Remove static members in ConversationCursor

1. Turn debugging on by default to avoid shipping debugging code.

2. Remove one static member and turn one static into a constant.

3. Fix naming of member incorrectly called sMostlyDead.

4. Turn more members into final.

5. Turn comments into useful javadoc.

6. Remove unused method.

Change-Id: Ie08cc003c1b110cf9baa760cb048a13c2f6de856
1 file changed