Hide Boost includes from ROOT dictionary generator and Cling

__ROOTCLING__ is defined by both rootcling at compile time and by
Cling at runtime when it re-parses dictionary payloads. Boost headers
(odeint, phoenix) contain template machinery that breaks Cling's JIT
interpreter, corrupting the whole dictionary and causing unrelated
classes to fail. Guarding with #ifndef __ROOTCLING__ keeps the class
declaration visible for dictionary generation while hiding the
problematic Boost includes.

Author: sportokalidis

src/core/behavior/regulatory_network.h

@@ -19,9 +19,11 @@
 
 #include "core/behavior/behavior.h"
 
+#ifndef __ROOTCLING__
 #include "boost/numeric/odeint.hpp"
 #include "boost/phoenix/core.hpp"
 #include "boost/phoenix/operator.hpp"
+#endif
 
 namespace bdm {
 class RegulatoryNetwork : public Behavior {