Fixed Stuck BOOT for ICS. fsck_msdos in kernel is for JB BUILDS.
this was failed to run and script exist. no one to start to the ROM.
Game over :)

now each ROM will try to use it's own binary at /system/bin/
if not exist, but ROM is JB build then kernel buildin binary will be used.
if no ROM binary and not JB, then no sdcards check and fix.