Patch for the sound codec

[Joerg Dietrich]

Hello,

I submitted a patch for the sound codec to bugzilla :
Bug 2721 - "Errors in sound codec and Ogg Vorbis decoder"

It corrects some minor bugs in the sound codec.
Now the Ogg Vorbis decoder works on big endian machines
like PowerPC Macs too.
The sound codec behaves different now. Before it returned
an error if it could not find a sound with the exact same
name given. Now it tries to load a sound with the same name
and a different extension too. This allows to recompress
sounds from WAV to OGG without recompiling the maps.

I recommend the inclusion of this patch into the actual
release candidate because of the error corrections.

Joerg