#225 c1541 -extract not working on d81 sub-dirs

[SlagDog]

c1541 test.d81 -extract

will only extract files from the root directory of the disk image where one would expect all files to get extracted.

Points to possibly incomplete vdrive implementation - see https://sourceforge.net/tracker/?func=detail&aid=3367517&group_id=223021&atid=1057617

Additional feature request: add a [<pattern>] option to -extract :)

[gpz]

this is kind of hard to fix due to the way c1541 handles disk images :/ it kindof works in vdrive now however.