g4mc/global:
============
+ 13.2.01:
+ TG4G3Cut, TG4G3CutVector
+ TG4G3Control, TG4G3ControlVector
+ - moved from physics category (as they are used in TG4Limits)
+ TG3Units renamed to TG4G3Units;
+
6.6.00:
TG4IntMap - new class; map of names to integer values;
used in TG4PhysicsManager for mapping between