Changes

*Shaders: bsnes' XML .shader, CG pixel .cg, and .cgp for shaders. It can also use bsnes' .filter files for filters.*[[GGPO]]-like netcode (latency hiding rollback). It should be lag-free if everyone involved emulates at full speed, don't live on opposite sides of the world and has decent internet speeds. It uses peer-to-peer UDP and supports two players. Due to rollback it requires a fair amount of CPU power to run.