Corrected makefile.

Thank you zear.
Updated build-script
Fix rocket sound.

TODO: Create missing soundeffects:
brickswap.ogg
brickcopy.ogg
brickswapdenied.ogg
brickcopydenied.ogg
Makefile.gcw0 clean also removes opk and elf.
Updated credits.
Finished walls in Thor theme.

All walls in thor theme using new edges.
Added source graphics.
Corrected color profiles on pictures.

Fixes warning.
Updated walls for oldskool theme.