* clearly separated the parsing process from the output writing, using an abstract intermediary representation of the mod file
* created the Statement class, and its derivatives, for that purpose
* fixed bug with "corr" statements in "shocks" blocks (variables indexes given to matlab were incorrect)
* fixed bug with "optim" option of "estimation" (this option was not passed to matlab)
* fixed bug with "dynatype" and "dynasave" (variable list was not passed correctly to matlab)
* fixed bug with "calib" and "calib_var" (they were unusable because of flex misspecification)
* fixed segmentation fault with "estimated_params_bound" and "estimation_params_init"


git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@1117 ac1d8469-bf42-47a9-8791-bf33cf982152