TOLTECS: Blacklist a pirated CD-RIP version (bug #6690)

This is a known pirated version, where all the audio has been removed.
Thus, no support will be added for that version.
DETECTOR: Do not show the zero matched size for illegitimate copies
SCI: Fix script bug #6692 - QFG3: Crash when speaking at the top of the giant tree
SAGA: Fix OOB access in the Shorten decoder

The changes are based on the Java implementation of the Shorten decoder.
This avoids all the out of bounds access (negative array indices), but
it still doesn't fully fix the actual decoder