Development Thread PPC flags optimization [testing required]

[JMC47]

This won't really affect GPU core limited games, which, with the CPU Core getting faster and faster, is really becoming the minority. It saw pretty decent speedups (2 - 3%) in Metroid Prime 2(SC), F-Zero GX, And Virtual Console games though, which is nice.

Nothing broken from what I could tell in the games I booted.