Added checks to avoid possible crashes opening tampered-with wad archives
- Added MAPTEMP and GFXTILES for Wolfenstein archive loading.
- Improved AUDIOT loader to properly scan for the 4 segments and strip "!ID!" tags from chunks.
- Fixed: Wolfenstein archives were still case sensitive in some places.
Merge pull request #118 from Blzut3/master

Wolfenstein 3D archive loading improvements
Merge branch 'master' of https://github.com/sirjuddington/SLADE into Music