+ Added try and catch to handle cases where oo_ is broken and (mh_replic==0 & load_mh_file==1).
+ Added computation of posterior moments for endogenous variables (triggered by moments_varendo option). First order moments are still missing.

git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@2028 ac1d8469-bf42-47a9-8791-bf33cf982152