Gameini updates.

Updates gameinis for various us wiiware titles. How to Train Your Dragon
2 (wii), Opoona (wii), The Legend of Zelda: Collector's Edition (gc),
Super Mario Sunshine (gc), Super Monkey Ball 2  (gc) updated.
Fixes issues 7491, 7447 and 7581.
Core: Simplify Memory::GetString
Merge pull request #853 from lioncash/memmap

Core: Simplify Memory::GetString
Merge pull request #847 from Linktothepast/gameinis

Gameini updates.
windows: remove now-extraneous NOMINMAX and WIN32_LEAN_AND_MEAN #defines from dolphin code.

Wrap dinput.h in a header defining DIRECTINPUT_VERSION instead of repeating it multiple places.