* 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.
Following changes are made with minimal touches;
- version dependent module imports
- codecs.open instead of open (for encoding errors)
- string_is_ascii modified for better compatibility
- In create_messages.py, synonym_defs are sorted as well to increase
testability, as Python 3 does not guarantee key order.
Note that this will cause previously generated files to have different
orders from the files generated without this patch.
- small changes; paranthesis around "print"s, has_key -> in,
"except x, y" -> "except x as y", sorted -> sort
Other files need similar small changes but are not touched as they are not
referenced from build.py
Fixes https://github.com/google/blockly/issues/2112
