iPhone 5 support

[Sappharad]

Added an iPhone 5 splash screen, along with code changes to make UI elements render correctly on the larger screen resolution.

Note: I added a hack to DetailViewControllerIPhone.mm

• //iPhone Simulator doesn't send screen rotations in 4-inch mode, so here is a hack to fix UI elements there: 4169
• [self shouldAutorotateToInterfaceOrientation:UIInterfaceOrientationPortrait];

The comment is actually incorrect. Rotation appears to be broken on all iPhone/iPod devices in the current code. You can probably remove that hack when rotation is fixed.

[Sappharad]

Also, wow. I just ran some tests.

The iPhone 5 is fast enough to run Dreamcast DSF's in 44100hz with the ratio set to 1. The 3rd Gen iPad can't even do that. Some tracks even play full speed with the DSP enabled. (Not many)