Metal Gear Solid: Peace Walker

[TheDax]

Once this https://github.com/hrydgard/ppsspp/pull/2431 is merged, the data install problem will go away, and if you install the extra game data(320mb), the in-mission codec calls will have voices as well. I think the only things left wrong with this game after this are the consecutive mission hang and the mech thing. Still no luck with fixing the hang, unfortunately. Dunno about the mech thing either.