CBD-774: Add support for automake 1.13

Change-Id: I2e6022da58b3992bdf49849ebdd4331fa7a957ab
Reviewed-on: http://review.couchbase.org/23969
Reviewed-by: Volker Mische <volker.mische@gmail.com>
Tested-by: Volker Mische <volker.mische@gmail.com>
Reviewed-by: Filipe David Borba Manana <fdmanana@gmail.com>