Depend on building native extensions only if Ruby has been built instead of installed
Fix documentation for Case block ending
Merge branch 'depends-ubuntu' into next

* depends-ubuntu:
  Fix documentation for Case block ending
  Depend on building native extensions only if Ruby has been built instead of installed
Merge branch 'next'

* next:
  Fix documentation for Case block ending
  Depend on building native extensions only if Ruby has been built instead of installed