1) Define a new type of parameter Random_prior_params, when prior/posterior...

1) Define a new type of parameter Random_prior_params, when prior/posterior mean mode do not work and the code searches randomly in the prior space a parameter combination that provides unique saddle path solution;
2) save point estimates in separate file, in order not lose work when subsequent analyses are done for prior/posterior mean/mode etc.
(cherry picked from commit 67d7ba75)