SCUMM: puttrace - Add suport for a dutch demo variant.

Found on Spy Fox 2 CD, Mac partition (EAN 5400646050646)
SCUMM: farm - Add support for a dutch Macintosh variant.

Found on CD with EAN8714902148334.
SCUMM: Add support for the "Mini Games" from Kellogg's complimentary CD
SCUMM: More detection fixes.
SCUMM: Update scumm-md5.h
Merge pull request #530 from BenCastricum/detection_fixes

SCUMM: detection fixes