Remove sealed subclasses in KonanTarget and associated entries in
Family. This commit doesn't adjust use-sites in the codebase,
see the following commits for that
Implementation notes:
- we use @Deprecated object-stubs in place of previously used sealed
subclasses/enum entries to report readable error instead of plain
UNRESOLVED_REFERENCE on usages of deprecated FQNs.
- these object-stubs *are not* part of the respective sealed
hierarchy/enum class. This is to make it possible to remove
references to them from use-site entirely without breaking exhaustive
'when's
^KT-64517 Fixed
Dmitry Savvinov
0f05ffe111