v4 preprocessor: allow option "order" in "estimation" statement

git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@2021 ac1d8469-bf42-47a9-8791-bf33cf982152

preprocessor/DynareBison.yy

@@ -977,6 +977,7 @@ estimation_options : o_datafile
                    | o_noconstant
                    | o_mh_recover
                    | o_diffuse_filter
+                   | o_order
                    ;
 
 prior_analysis : PRIOR_ANALYSIS '(' prior_posterior_options_list ')' ';'