Fix false positives in JDK-17 with RandomSupport#178

Merged

uschindler merged 3 commits intomainfrom dev/issue177

Apr 23, 2021

+206-123

Commits on Apr 16, 2021

Refactor class hierarchy climbing with visitor (fixes also some smaller bugs)
uschindler
committed
Fix JDK-17 bug with RandomSupport extending internal/nonportable classes
uschindler
committed
Rename ClassSignature to ClassMetadata
uschindler
committed