Overlay local gameinis over global gameinis instead of copying.

Huge megacommit because a lot of things needed to be modified to make this
possible.

Data/Sys/GameSettings/G3FP69.ini

@@ -0,0 +1,35 @@
+# G3FP69 - TimeSplitters Future Perfect
+
+[Core]
+# Values set here will override the main dolphin settings.
+MMU = 1
+BlockMerging = 1
+
+[EmuState]
+# The Emulation State. 1 is worst, 5 is best, 0 is not set.
+EmulationStateId = 3
+EmulationIssues = Needs mmu to run, and it runs very slow because of it (r6436)
+
+[OnLoad]
+# Add memory patches to be loaded once on boot here.
+
+[OnFrame]
+# Add memory patches to be applied every frame here.
+
+[ActionReplay]
+# Add action replay cheats here.
+
+[Video]
+ProjectionHack = 0
+PH_SZNear = 0
+PH_SZFar = 0
+PH_ExtraParam = 0
+PH_ZNear =
+PH_ZFar =
+
+[Video_Settings]
+SafeTextureCacheColorSamples = 0
+
+[Video_Hacks]
+DlistCachingEnable = False
+