trunk preprocessor/macro: report the location of @#for or @#if statement when...

trunk preprocessor/macro: report the location of @#for or @#if statement when not matched by an @#endfor or an @#endif

git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@2304 ac1d8469-bf42-47a9-8791-bf33cf982152