[Installer] - Better fail checks

[xan1242]

Installer does NOT work under Wine/Proton because the work directory is wrong.

Secondly, the installer says it succeeded even though it clearly failed because of this.

[xan1242]

So this actually seems to be an issue with Wine's command interpreter.

For a 'for' loop, it doesn't accept paths in quotation marks as an argument and it fails instantly. On Windows this works just fine.

for %%f in ("InteractiveMusic/*.asf") won't do anything

for %%f in (InteractiveMusic/*.asf) will work

This is very janky anyways and it needs a better way to call the process (instead of issuing the system command) but I guess this will have to do for now.

(I guess this will have to be noted in a Wine bug report if it hadn't been done already)

[xan1242]

For MW it was fixed in d22a65e

Carbon is next...

[xan1242]

Carbon issues fixed in b7d8535

Next would be to implement better error checks.

[xan1242]

Halting this issue until this is resolved: #15

Considering the removal of interactive music means removal of the installer.