Test also MIN, MAX and PRODUCT

Change-Id: Ibbc4c65271142b63c85d08ab4c9162ba96d32b6a
Add opcodes for binary operators + - * /

These are of course very common, and one would hope they are correctly
implemented in our OpenCL code.

Change-Id: I0ca6d3983502b18a1ea56522d4f20673ad94357d
Add COUNT

Change-Id: Ibdff629c3653d43e08b5200a7babb7ff05a7b5ac