Its support complicates JS StringBuilder implementation with no actual
performance improvements. Benefits of having capacity() function
in common code are also not completely clear.
Relates to KT-33069
#KT-40168
- Setting -Doverwrite.output=true updates gold data
- Big packages don't get split into chunks
- Unique lines in the API are marked with /*∆*/ and diff test is removed
- Annotations on separate lines and other dump format tweaks
- Test data moved to libraries/stdlib/api/
- Minor visibility fix to Enum members