Fixed issue with NCPA compensation mode 2 (only ground DM) due to zero matrices (not NULL)
Removed dbg.psol. Always use DM command from same time step as gradients for psol computation
Enable using native mkl libraries
Gradoff is now applied in wfsgrads_post instead of in recon
Make check_nan optional by defining ANTI_ROLLOFF to 0
The DM vector for PSOL is now contained in simu->dmpsol. The averaged version for each wfs is in simu->wfspsol. The dmpsol vector does
not contain the DM sys flat if it is not preloaded to integrator.
Improved speed of cexp by using cos sin instead. fast for pure imaginary numbers.