C++ Estimation Minor changes to KalmanFilter initialisation and testing routines to improve handling structural changes parameters and test accuracy

C++ Estimaion: Minor change KalmanFilter.* to use gain matrix KFinv for conversion check and cosmetic changes to ModelSolution.cc, testInitKalman.cc and testkalman.cc

Adding mod-files to test normpdf, normcdf and erf and to test steady_state (with and without block decomposition and bytecode)

adding to diagnoosticks check of rank of Jacobian of static model when steady state computation fails

2) bug fix with mh_drop

2) small cosmethics;

2) bug fix for remote slave sessions;

* give the possibility of calibrating measurement errors in the "shocks" blocks (only for observed endogenous variables)
* M_.H is now initialized in the preprocessor
* only one "varobs" statement is now accepted in a MOD file

C++ Estimation: Adding test and fixing a bug for KalmanFilter.cc and making some cosmetic changes to InitializeKalmanFilter.cc and ModelSolution.cc

2) bug fix;

In MATLAB >= 7.7, don't display a warning if we use deprecated interface to set seed of random number generators