[DEVMINOR] Added the HEADER_SIZE macro to the Java ARCommand class
[DEVMINOR] Added the HEADER_SIZE macro to the Java ARCommand class

Parrot-Developers/libARCommands,kradhub/libARCommands,Parrot-Developers/libARCommands,kradhub/libARCommands,Parrot-Developers/libARCommands,kradhub/libARCommands,kradhub/libARCommands