made test video work
modifications needed in fatfs implementaiton
modifications on kernel, added encoder, modified blitter (simple)
fixed sdio clock & things, modified blitter, added a 2x blitter for video
nicer selection screen with customizable BG gradient
added asynchronous flasher routines in sync with (not enabled)
starting icon loading
"Fixed" (it's still a hack) a bug where int vector was in flash (by default) when loaded from RAM
added simple button / LED api to kernel