Optimized varintgb find.
Optimized varintgb find.

cruppstahl/SIMDCompressionAndIntersection,lemire/SIMDCompressionAndIntersection,lemire/SIMDCompressionAndIntersection,lemire/SIMDCompressionAndIntersection,cruppstahl/SIMDCompressionAndIntersection,cruppstahl/SIMDCompressionAndIntersection