linux: Music directory existing in ./local/share/Daikatana/data will cause casepath return check to fail

[Frank Sapone]

Create a Music directory in /home/<user>/.local/share/Daikatan/data

Alure will complain it can't find the music unless the music exists in that directory.

Problem is stemming from FS_GetAbsolutePath to the casepath check. It always returns true. This appears to only affect the audio library as making a directory such as "Maps" still allows maps to be loaded.

This was noticed when loading the map gawd.bsp from a custom maps server which has a downloadable asset, "dkn64_ep4.mp3"

[Frank Sapone]

Solution found, pending peer review.

[Frank Sapone]

Rewritten fcaseopen functions from scratch by caedes. Will be in next released build. For those who cannot wait, a debug build is available at: http://dk.toastednet.org/DK13/LINUX/DK_DEBUG_103016.tar.bz2. This is not compiled with caedes build environment so older linux systems may be unable to run it.