* Google changed from an Inc to an LLC.
This happened back in 2017 but we didn’t notice. Officially we should update files from Inc to LLC when they are changed as part of regular edits, but this is a nightmare to remember for the next decade.
* Remove project description/titles from licenses
This is no longer part of Google’s header requirements. Our existing descriptions were useless (“Visual Blocks Editor”) or grossly obselete (“Visual Blocks Language”).
* License no longer requires URL.
* Fix license regexps.
If external code can ‘play’, it should be able to ‘load’. Resolves
compile error in Blockly Games. Feel free to push back if this API
shouldn’t be public.
Also fix compiler warnings on block defs. ‘undefined’ means undefined, ‘=‘ means optional.