Allow games to be specified in ROM DB via sha1 instead of product ID. Added a new ROM DB memory map device type fixed for emulating simple fixed value copy protection registers. Used those two features to support Ya Se Chuan Shuo via a ROM DB entry.

#version 110

attribute vec2 pos;
varying vec2 texcoord;
uniform float width, height;

void main()
{
	gl_Position = vec4(pos, 0.0, 1.0);
	texcoord = sign(pos) * vec2(width/1024.0, height/-1024.0) + vec2(width/1024.0, height/1024.0);
}