Add in matfaust projector functors (sp, splin,...) as defined already for pyfaust.

...tlab/+matfaust/+factparams/@ConstraintMat/ConstraintMat.m

wrapper/matlab/+matfaust/+factparams/@const/const.m

wrapper/matlab/+matfaust/+factparams/@normcol/normcol.m

wrapper/matlab/+matfaust/+factparams/@normlin/normlin.m

wrapper/matlab/+matfaust/+factparams/@sp/sp.m

wrapper/matlab/+matfaust/+factparams/@spcol/spcol.m

wrapper/matlab/+matfaust/+factparams/@splin/splin.m

wrapper/matlab/+matfaust/+factparams/@supp/supp.m