Add method to get the ValueType of a TypedValue as a keyword to Android API

[gburd]

Also remove a println (leftover from debug?)

This makes life easier when dealing with query results, as it allows them to be extracted without knowing the types in advance. This makes use from clojure easier.

Returning standard data structures and types instead (commented on elsewhere) is something that I think is also worth a look.

I would be interested in helping out with this project so I would be happy to chat sometime.