Adding EnableLoadExtension so that csharp-sqlite/sqlite-net-wp8 can build.
Adding EnableLoadExtension so that csharp-sqlite/sqlite-net-wp8 can build.

ericsink/sqlite-net,jorik041/sqlite-net,nicolehaugen79/sqlite-net,praeclarum/sqlite-net,haithemaraissia/sqlite-net,peterhuene/sqlite-net,Applied-Duality/sqlite-net,Y-Less/sqlite-net,peterhuene/sqlite-net,arlm/sqlite-net,CutFlame/sqlite-net,JAgostoni/sqlite-net,CutFlame/sqlite-net