These are likely "official" branches. Either for ATRAX in Poland or
for distribution in germany.

"Action_Replay_V7.3_20X_Atrax_1991_PAL" comes close to the original
Datel "Action_Replay_V4.2_5.0_1988_PAL_v2" just like the german
"Action_Cartridge_Plus_5". However they both contain additional code
and small changes and therefore we conclude more versions of the "V4"
to "V5" transition must exist.

The "Action_Cartridge_Plus_6" was found twice. "_AUS" marks the
version which has the basic command "OFF" changed to "AUS".
