Something for the shoppa players
So, this was a relatively simple change, that while it should work ok, will probably require a bit of testing to avoid leaving out too many people w/ wimpier machines. We might even have to institute some sort of machine capabilities indicator for online play.
See Issue 394.
For people who didn't immediately spot it, this is a 4096x4096 map. The issue is for supporting variable map dimensions, this removes the limit on static map PNG sizes, apart from the limits imposed by SDL, your computer, and sanity.