This fixes text on the menu and in-game.

The primary focus of this PR is the Eternal Darkness patch which fixes hanging at startup, which prior to this fix makes Eternal Darkness unplayable in hardcore. The MHTri patch was added as well simply because it could be.

The game calls GXSetDrawDone and then switches the GP fifo without first
waiting for the draw done interrupt to arrive. Before
e96960e2a678f072f316173c80650897013fb99c, Dolphin would not execute the
draw done command and potentially also skip other commands in the old GP
fifo. Since that commit, Dolphin executes the remaining commands on the
old GP fifo just before disabling reads for switching, but because
PixelEngineManager::RaiseEvent() enforces a minimum delay of 500 cycles
for the draw done interrupt, it arrives after the game has switched to
the new GP fifo which seems to trigger the deadlock.

This patch replaces the call to GXSetDrawDone by a call to GXDrawDone
which does the same but also waits for the interrupt.

GraphicsSettings: EFBAccessEnable=false by default

Removes the EFBAccessEnable=false explicit game overrides for:
  GT6 (Terminator 3: The Redemption)
  GXB (SSX3) [deleted - no other configuration]
  RTH (Tony Hawk's Downhill Jam)
  SNC (SONIC COLOURS) [deleted - no other configuration]

Adjusts the Texture Cache settings/slider to 512 samples which equates
to the 'middle' option in the UI.

If using the 'Safe' Texture Cache Accuracy mode, the left screen will only render bloom in 2P modes.
If using the 'Fast' Texture Cache Accuracy mode, the Intro Movie will
drop frames near the end when the "Shadow the Hedgehog" game title
letters appear. This mode also can result in artifacts/bleed from bloom
effects in some situations.

These haven't worked since 2008 (0b5fed62c1b92017ce43a87ba223763a75e7fbef).