Summary: Backed out changeset 678f11cc769e
Reviewed-by: coffeys

Reviewed-by: jeff

Reviewed-by: thartmann, simonis, mbaesken

Summary: Added required explicit NULL checks
Reviewed-by: thartmann, kvn

Reviewed-by: dholmes, zgu

Summary: Change class version to version accepted by JDK 8.
Reviewed-by: dholmes, hseigel

Summary: Fixed missing null checks on the result of CodeCache::find_blob() found by Parfait.
Reviewed-by: shade, kvn