Reviewed-by: jeff

Reviewed-by: mschoene, coleenp, rhalade, acorn, gtriantafill
Contributed-by: rachel.protacio@oracle.com

Reviewed-by: coleenp, kevinw
Contributed-by: rachel.protacio@oracle.com

Reviewed-by: thartmann, simonis, mbaesken

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

Summary: Fixed a missing null check on the return value of AddPNode::Ideal_base_and_offset() found by Parfait.
Reviewed-by: kvn