[9] RFR[XS] 8170416: CompilerControl: VectorizeDebug option type is incorrect

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/8170416/webrev/
https://bugs.openjdk.java.net/browse/JDK-8170416

VectorizeDebug C2 option flag should be uintx instead of bool. It is 
used as bitset for different traces during superword optimization.

Thanks,
Vladimir