Bump to util 6.3.7 and finagle 6.5.1
Merge branch 'develop' of https://github.com/twitter/storehaus into develop

Conflicts:
	storehaus-mysql/src/main/scala/com/twitter/storehaus/mysql/MySQLStore.scala
Merge pull request #125 from ximyu/develop

Bump to util 6.3.7 and finagle 6.5.1