When you play a game with CPU players, on the end of game stats screen it will say, in the player name row, *AI* AI AI
for every CPU player. It should probably say CPU there instead or whatever it used to say there on 3.6.0.3.
I'd like to take the opportunity to propose we use this as a change to get rid of that awful "CPU" label and replace it with a single "AI". Why? Because "CPU" is just wrong and raising a generation of politically incorrect gamers (it's like the people who use "CPU" to refer to the computer tower as a whole). CPU stands for Central Processing Unit. Sure, that little brain is where the magic happens, including the calculations which the game AI decides what to do, but the CPU itself isn't the controlling force behind the decisions that the AI makes (when we get down to it, the CPU is just a piece of silicon that can execute instructions; the important part is that the program tells the CPU what instructions to execute). It's the program, MegaGlest itself, which makes the decisions of how to play the "computer controlled" players.
The label "AI" would be more accurate, then (although even "AI" has its controversies, namely in the definition of "intelligence", but it's closer than "CPU").