Fix doc for oo_.{Smoothed,Updated,Filtered}Variables and oo_.SmoothedShocks.
Improvements to smoother2histval.

- Support saving to an output MAT file.

- Handle smoothed variables computed by a Metropolis, by adding support for the
  parameter_set option.

- When an auxiliary variable is not in the output model, emit a warning instead
  of stopping with an error message (aux vars may be different between input
  and output models, even if the equations are identical).

Ref #594
dmm/estimation: add dirichlet prior shape front end, #642
Changed dseries' constructor so that the third and fourth inputs arguments accept cell of strings *and* character arrays.

=> It is possible to pass M_.endo_names as a third input argument.
Fixed bug in the error message displayed when the mod file is not in the current folder.
Added a new routine for cleaning up a folder (delete all the files generated by Dynare).
Fix typo.
Fix exception handling under MATLAB in unitary test infrastructure.

The getReport() function of MATLAB expects an exception coming from the "catch"
statement. It is not happy with the value returned by lasterror().
Fixed bug in dseries constructor introduced in 4e1c26db.
Move check of Jacobian matrices for NaN and Inf to dedicated function for reuse in model_diagnostics.m
Expand model_diagnostics.m to check Jacobians for NaN and Inf
fix typo
Don't skip first observation when loading XLS(X) or CSV files.
Merge pull request #643 from JohannesPfeifer/Jacobian

Improve checks of Jacobian
Add check to model_diagnostics.m whether Hessian was computed
Merge pull request #645 from JohannesPfeifer/diagnostics

Add check to model_diagnostics.m whether Hessian was computed
Add per-directory local Emacs variables.

The idea is to enforce the coding style for Emacs users.
dmm: nile.mod from Michel, #568
dmm: multinomial statement, #568
dmm: set prior on transition probability declared in multinomial statement, #568