The new movies weren't played because the names did not match.
Transition from the last level of Ep1 to the first one of Ep2 did not work.
Selection with command line switch wasn't reliable.
There's a second variant without this definition, so this needs to be defined internally, and since it needs to be done internally it may receive proper localization labels.
- added command line options to load the original file dump of both mods in the game directory.
- both also require loading additional non-standard-named .art files
Not tested yet!
* Added a JSON-based header to the savegames so that the unified menu can read from a common data source.
* moved loading and saving of frontend independent data to the wrapper so that support is automatic.
- consolidated the 3 identical S_OpenAudio implementations. The replacement code is disabled for the time being because it needs a rewrite. The replacement logic is uses is a bit too volatile.
- removed the old GRP scan code.
