imageio_rawspeed(#9477): better (lack of) CFA detection (think sRAW/Linear DNG)
(cherry picked from commit a74a6476955c4405b46d30e2fa0644252ef79c2d)
imageio_rawspeed: remove redundant flags code for non-cfa raws
(cherry picked from commit 5e4f4c95e894e20e9968f5a1f27eee42b6aaf394)
cacorrect: don't accidentally run on non-RAWs
(cherry picked from commit 4dd3a37c67f671c4a141988555a57bf57ad78357)
colormatrices: sony nex-7 enhanced matrix thanks to Thorsten Bronger
(cherry picked from commit d6492524145541d1db406f2ed79d1b12c087fa55)
lens: sanitize after parenthesis
(cherry picked from commit 066175d148d3e452a21ea7af05d9945a6eba5ab5)
lens: guard against mishaps
(cherry picked from commit b572435bf91e75c0262a83163ced99c72d4fd7f0)