Allow viewer to build without fmodex. This allows openal to be the audio
engine and sounds, wind etc to be present.
Several years ago we could set -DOPENAL:BOOL=ON and -DFMODEX:BOOL=OFF and the viewer would build with an openal audio engine.
With current viewer-release this results in undefined symbol errors from llaudio at secondlife-bin.exe link.
DOPENAL:BOOL=OFF and -DFMODEX:BOOL=OFF the build will be without any audio engine. With that configuration Help>About Second Life rightfully shows no audio engine.
Updated; See below
is submitted for review.
This should help new folks build the viewer without the hassle of building a personal copy of fmodex.