noise profile: panasonic dmc-lx7 by deryk lister
(cherry picked from commit cd61bba12471dbbd3872aa895a50a021d016f87f)
masks: better prevention of memory fragmentation
(cherry picked from commit 8965f1bc2d3a2ddf0e187cc06a0b5aa585ce7949)
Get rid of most .h files in iop/

IOPs shouldn't expose internals to the outside world. colorin/colorout
are a little more work and coming next.
(cherry picked from commit 6b5571760c7ea9cba2c9bbf98fac7c3cc9c6a804)