Check correctness of set_parameters used in dynare_estimation_1

1. dynare_estimation_1 contains the lines

if ~isempty(estim_params_)
    set_parameters(xparam1);
end

I was wondering why not set_all_parameters is used, which also sets the measurement error. set_parameters may have its justification here, but I don't see why. 2. set_parameters sets M_.Sigma_e, but in contrast to set_all_parameters it does not use the correlation information from calibration stored in M_.Correlation_matrix and M_.Correlation_matrix_ME. This strikes me as wrong and the file thus as buggy.

This relates also to #392