tests/measurement_errors/fs2000_corr_me_ml_mcmc/fs2000_corr_ME.mod: set mh_blocks=1

This fixes the test under Octave on haumea.

tests/measurement_errors/fs2000_corr_me_ml_mcmc/fs2000_corr_ME.mod

@@ -128,6 +128,6 @@ stderr gp_obs, inv_gamma_pdf, 0.001, inf;
 //corr gp_obs, gy_obs,normal_pdf, 0, 0.2;
 end;
 
-estimation(mode_compute=9,order=1,datafile=fsdat_simul,mode_check,smoother,filter_decomposition,mh_replic=2000, mh_nblocks=2, mh_jscale=0.8,forecast = 8,bayesian_irf,filtered_vars,filter_step_ahead=[1,3],irf=20) m P c e W R k d y;
+estimation(mode_compute=9,order=1,datafile=fsdat_simul,mode_check,smoother,filter_decomposition,mh_replic=2000, mh_nblocks=1, mh_jscale=0.8,forecast = 8,bayesian_irf,filtered_vars,filter_step_ahead=[1,3],irf=20) m P c e W R k d y;
 shock_decomposition y W R;
 //identification(advanced=1,max_dim_cova_group=3,prior_mc=250);