Preprocessor:

* new options to "identification" statement: "ar", "useautocorr", "load_ident_files", "prior_mc"
* implement the call to dynare_identification() when "identification" statement is encountered
* new options to "dynare_sensitivity" statement: "ar", "useautocorr", "load_ident_files"
* trigger computation of model derivatives w.r. to parameters when "identification" option of "dynare_sensitivity" statement is used


git-svn-id: https://www.dynare.org/svn/dynare/trunk@3046 ac1d8469-bf42-47a9-8791-bf33cf982152