* src/imach.c (Module): Version 0.99r33 A lot of changes in

* src/imach.c (Module): Version 0.99r33 A lot of changes in
reassigning covariates: my first idea was that people will always
use the first covariate V1 into the model but in fact they are
producing data with many covariates and can use an equation model
with some of the covariate; it means that in a model V2+V3 instead
of codtabm(k,Tvaraff[j]) which calculates for combination k, for
three covariates (V1, V2, V3) the value of Tvaraff[j], but in fact
the equation model is restricted to two variables only (V2, V3)
and the combination for V2 should be codtabm(k,1) instead of
(codtabm(k,2), and the code should be
codtabm(k,TnsdVar[Tvaraff[j]]. Many many changes have been
made. All of these should be simplified once a day like we did in
hpxij() for example by using precov[nres] which is computed in
decoderesult for each nres of each resultline. Loop should be done
on the equation model globally by distinguishing only product with
age (which are changing with age) and no more on type of
covariates, single dummies, single covariates.