TypeOracle becomes interfaces. Refactors TypeOracle into a set of interfaces rather than concrete types. Moves implementation into a new package. Functionally, should be essentially the same. This will allow for alternative implementations of TypeOracle, including server-side type models and GPE integration. http://gwt-code-reviews.appspot.com/1113801/show git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9363 8db76d5a-ed1c-0410-87a9-c151d255dfc7