tree c79015b6e8d3e669db396e93319a5adf19807fd2
parent a75771e3ab429fae2f9af770416150733264a281
author Yabin Cui <yabinc@google.com> 1426616347 -0700
committer Yabin Cui <yabinc@google.com> 1426624737 -0700

Change name of rwlock benchmark.

rw_lock is not easy for me to remember, so I prefer changing it to rwlock.

Change-Id: I0784acaca0c3b46c28184a77eb29ffe696f9ea07