Request for reviews (S): 7045693: java/util/EnumSet/EnumSetBash.java still failing intermittently

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/7045693/webrev

Fixed 7045693: java/util/EnumSet/EnumSetBash.java still failing intermittently

In my changes for 5091921 I forgot that Bool node could be shared. New limit for 
unrolled loop should be set only for zero trip guard and loop iteration test. 
Old unrolling code created a new loop test for each unroll.