dynare was crashing without the statistical toolbox from Mathworks.

Ref. !2296

The auxiliary equation for the composite target of the PAC equation is
cherrypicked unless the value of the (new) last argument is true.

Closes: #1929

Also revert d95154ff, always append an equation for the composite target.

Provide `dr_cycle_reduction_maxiter` option

See merge request Dynare/dynare!2295

See #1920

See the Debian changelog entry for dynare 6.1-2.

[skip ci]

See:
- https://github.com/Homebrew/homebrew-core/issues/165388
- https://trac.macports.org/ticket/69639

[skip ci]

kim2.mod: add paper reference

See merge request Dynare/dynare!2297

Fixes https://forum.dynare.org/t/invalid-mex-file-whe-running-sensitivity-analysis-m1-mac-6-1/25829

It seems that meson does not link libquadmath (which is needed by libgfortran).
When doing dynamic linking, this is not an issue since the dynamic linker loads
libquadmath recursively after loading libgfortran. But when doing static linking,
libquadmath needs to be explicitly linked.

Not yet clear at this point: why isn’t this needed under Linux and Windows?

This avoids interfering with the build-matlab directory that may already be
used by the developper locally. Also, this makes it symmetric with the Windows
build script.

model_diagnostics.m: account for order==2 being the default but dynamic_g2 not...

See merge request Dynare/dynare!2294

model_diagnostics.m: account for order==2 being the default but dynamic_g2 not necessarily being present

The bounds are already initialized in solve_stacked_problem.m (and they do not
make sense in solve_stacked_linear_problem.m, since the latter is for linear
problems only).

These should be strict inequalities.

sim1.m: fix logic of mod statement in debug information

See merge request Dynare/dynare!2293

Crashed if mod()==0 as last value was not accounted for

The solver relies on a reordering of equations (eq_index) so that reordered
equations appear at the index of the endogenous to which they are associated
through the complementarity condition.

However, this reordering could be computed incorrectly in the presence of
multiple complementarity conditions (technically, eq_index was not necessarily
a permutation).

 make_ex_.m: correct matrix dimensions with datafile and exo_nbr==0

See merge request Dynare/dynare!2292