Fixed alignment bug (16 bits = 1 word on DCPU-16)

in the File section, 16 bits of flags were implied to take 32 bits of storage, probably due to some sort of 8-bit/16-bit mixup. This has been fixed.
Merge pull request #8 from mrout/patch-2

Fixed alignment bug (16 bits = 1 word on DCPU-16)