Implemented current/reset/rewind/valid; Deleted test/mongocursor-constructor.php and moved all cursor test cases to mongoCursorTest.php
Set started_iterating to true after constructing cursor in rewind(); Fixed minor variable reference issue in mongoCursor.php; Added test for adding options after started iterating (which should throw exception)
cleaned up unused line
Merge pull request #27 from 10gen-labs/gh26-mongocursor

Implemented current/reset/rewind/valid; Deleted test/mongocursor-constru...