Move some CPU cycle calculation from address resolution to the opcodes. This is to eventually move it from the resolved-address ops as well, reducing the number of memory stores.
Move all CPU cycle calculations into cpuops.cpp.
Mess with Mode 5 some more. Secret of Mana's menu sprite is fixed; however, as of commit 3cd20e203f3b0af8c32921f86547a126d74b34eb (still not fixed in this commit!), Donkey Kong Country's Rareware icon is split by black columns.