MB-10943: returning to Erlang R16 for Linux/Mac

Change-Id: Ic3fbf5812a757fcf7a82a8ad46ce3a60ff2350c3
Reviewed-on: http://review.couchbase.org/37469
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>