MemoryUtil: get executable pages near static data

and clean up a bit.

Source/Core/Core/PowerPC/Jit64IL/JitIL.cpp

@@ -250,7 +250,7 @@ void JitIL::Init()
 	UpdateMemoryOptions();
 
 	trampolines.Init(jo.memcheck ? TRAMPOLINE_CODE_SIZE_MMU : TRAMPOLINE_CODE_SIZE);
-	AllocCodeSpace(CODE_SIZE);
+	AllocCodeSpace(CODE_SIZE, PPCSTATE_BASE);
 	blocks.Init();
 	asm_routines.Init(nullptr);