Fix incorrect value of CACHELINESIZE on s390x #397
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The
sysconf(_SC_LEVEL1_DCACHE_LINESIZE)call which is used to get the CPU cache line size returns 0 on s390x RHEL 7.x, which is an incorrect value. This causesrpl_commit_order_queueandintegrals_lockfree_queueto fail. This PR is for fixing the same.