Packed ptolemy catapults previously unpacked to macedonian catapults. Also, unpacked ptolemy catapults packed to macedonian catapults. This created a minor gameplay problem where double clicking your packed catapults as ptolemy would not select all of them, because the catapults that had already been unpacked and packed had a different template from those that were never unpacked.
This fix makes ptolemy catapults unpack to ptolemy catapults, and pack again to ptolemy catapults.
Also, gives all catapults a SelectionGroupName, gives all bolt shooters a SelectionGroupName, and gives all siege towers a SelectionGroupName. This means that if you have catapults from different civs because you captured an enemy catapult, double clicking on a catapult will select all of them regardless of civ and also regardless of packed/unpacked status. (If you wish to select only the packed catapults from a specific civ or only the unpacked catapults from a specific civ, you can triple click.)