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* Further optimization to the colortree, now allocated in one single chunk of 4090 bytes (2051 times better than original code!). Not doing all the malloc/frees should be slightly faster, and it also helps with cache locality (the whole tree can fit in the cache). * Remove the useless color "balancing" multipliers that did more harm than good. We still need some improvements on the median cut, or maybe switch to a smarter algorithm; or add some cheats. See the JFIF quirks for an example. git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1876 416bcca6-2ee7-4201-b75f-2eb2f807beb1