The list of supported filesytems goes dynamic.

The list of supported filesytems goes dynamic.

- The plain list of "should be a supported filesystem" finally is fixed,
  now it scans /proc to see if the kernel is able to mount it, if not it
  modprobes it and as a failover tries to insmod it from the real rootfs
  /lib/modules directory if it can.
- This should fix - en passant - the "drop to busybox shell if a ntfs
  filesystem is found while scanning for persistence media" bug as well.

Signed-off-by: Marco Amadori <marco.amadori@gmail.com>