Austin branch

I have added the ability to copy files from multiple sectors. I am confident that my non deleted file copying works like a charm for both single and multi sector files. I am also confident that my deleted file copying works for one sector files. I am relatively confident that my deleted files copying works for multi sector files, but I haven't tested it yet. I may try to make an image with a deleted JPG or something to test.
This function looks at the FAT entry for a specified addressed, and returns the 12 bits stored in that FAT entry. Since the fat entry stores an offset for the data section, I return the "data_section_offset"