AGOS: Give each MIDI track its own loop flag

This is needed because the MIDI resources have their own loop flag
that overrides the global one. This makes a difference for games
that use MIDI both for music and sound effects, such as (limited
to?) the floppy version of Simon the Sorcerer 1.
SCUMM: Fix bug #2034 - MANIAC V2: Early Collision with Green Tentacle
Merge pull request #533 from segrax/master

SCUMM: Fix bug #2034 - MANIAC V2: Early Collision with Green Tentacle
Merge pull request #526 from eriktorbjorn/agos-midiloop

AGOS: Give each MIDI track its own loop flag (bug #6665)
I18N: Update/improve Dutch translation
I18N: Fix missing translation entries

The last translation entry of a .po file was not properly handled.
I18N: Update translations data file
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