Merge remote-tracking branch 'origin/2.10.x' into master

* origin/2.10.x:
  SI-7171 Consider prefix when assessing type finality.
  please ant with filenames, add comments
  Fixed error in reflection API docs about linearization order on method baseClasses
  Shadowed Implict typo (fixes no issue)
  remove unused imports

Conflicts:
	src/reflect/scala/reflect/internal/Types.scala