Read firmware from player

Now we can read firmware under normal USB connection. It looks work well.

Read10, Write10, ReadCapacity command support

With my co-worker help, it can do read/write through SCSI command. The original data buffer pointer return from structure member. change it to golbal array, it can write data into u-disk now.

Python access mass storage class device

use SWIG function. Build C dll which access USB port with DDK support. Python implement SCSI command function. Now can send INQUIRY and READ10 command. Try to add more SCSI command support in future.