Switched back to vector sort for median calculations: the results of the histogram search function diverge more and more from the simple median calculation as the exponents increase.
At 2.0 the test picture is already impossible to WB as the multipliers are too far off (2.78226e+08 histo vs 9.7927e+11 sort), and the normal WB sliders can't compensate for those huge factors.
Added performance improvements suggested by heckflosse. Lowered median sampling step from 7 to 5 since calculation is now much faster.
Added support for Fuji X-Trans raw files.
Applied SSE2 patch provided by @heckflosse, improves performance in main processing loop.
Moved film negative processing stuff in its own compilation unit.
Code cleanup: removed redundant omp directives.
Added check for dead pixels, going above threshold after inversion. ST_BAYER only for now.
Reverted leftover hack in cropwindow.cc
