Closes: #273

Added check for NaN in Jacobian to stochastic_solvers and added explicit error message to print_info.m

Manual cherry pick from Commit: 36853cb7

interrupted by non finite result

simulations: draw random shocks so that, given a seed, the sequence is the same, independently of the number of periods

for current needs)

-pass along errors returned by cycle reduction algorithms;
-logarithmic reduction fails on error
-replace expensive and random condest() by call to linsolve()
-uses linsolve() to compute hx

dynamic systems

options_.gpu (no interface yet, use options_.gpu=1). Added test
./tests/first_order/fs2000_cr.mod

dyn_first_order_solver.m in global_initialization.m This is necessary
if noclearall option is used.