Epilogue

provisions for making shock decompositions of epilogue variables. ALso include MATLAB implementations of new option with_epilogue for commands:

1. shock_decomposition, realtime_shock_decomposition,

   where preprocessor should trigger

   options_.shock_decomp.with_epilogue=true;

2. initial_condition_decomposition

   where preprocessor should trigger

   options_.initial_condition_decomp.with_epilogue=true;