Generate correct TypeScript SDK definitions

[jnkvca]

Currently our output *.d.ts files are broken, because we are changing the *.js output from Emscripten to make it cleaner and more flexible.

The following needs to be done:

• transform-typescript-definition-*.js and transform-typescript-definitions.js scripts need to be fixed so that they're correctly applying all of the changes to the *.d.ts file(s) before they're put in the output directory (note that some of these files come from the API generator tool)
• pay extra attention so that the top level objects are placed in the correct parent objects/root
• ensure that __ and other internal methods are stripped out
• ensure that manually added fields (such as properties) are added to the *.d.ts file(s)