Been almost a month since the code formatter was run so this change was
a bit larger than would be expected for a normal (weekly) update.  Diffs
mostly around:

- Whitespace changes
- Missing copyright headers
- Missing visibility modifiers

it looks like when we move to GitHub, we manually declared some COM interface defined in VS in roslyn code base and when we do that, we put methods in wrong order.

made it to match order of methods in idl.