8163313: assert(comp != __null) failed: compiler not available Summary: Constrain compLevel parameter in WB_IsIntrinsicAvailable() to supported levels Reviewed-by: kvn

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.hgtip
^.bridge2
^.jib/
.DS_Store
.metadata/
.recommenders/