Torque EAX Support

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This patch will fix Torque's EAX support. I fixed all the AudioEnvironment and AudioSampleEnivronment
stuff to work with EAX 2.0. I can only get it to link on Win32 so i added some #ifdef statements to
conditionally compile it in.

How to:
patch your source using eax.patch
#define EAX (either in audio.cc directly, or in your project settings)

Clean and rebuild. When you run it you should see something like this in the console output:

OpenAL Driver Init:
OpenAL
EAX Enabled.
   Vendor: Creative Labs Inc.
   Version: OpenAL 1.0
   Renderer: Software
   Extensions: EAX 2.0, EAX 3.0, EAX Unified, and EAX-AC3

The third line should say "EAX Disabled" or "EAX Enabled".


As an example on how to use it, I've included a modified trigger datablock called "EnvironmentTriggerData".
It adds one field to "TriggerData" called "audioEnvironment". It should be set to an AudioEnvironment datablock.
onTriggerEnter() will set the environment to the AudioEnvironment settings. onTriggerExit() will reset the
environment back to the default. To use it, copy "trigger.h" and "trigger.cc" over the old version.


I've also included some scripts that define a bunch of AudioEnvironment and AudioSampleEnvironment datablocks.
exec() these in the appropriate place (init.cs for client, game.cs for server).

AudioSampleEnvironment defines environment settings for individual sound sources. I've included two.

datablock AudioSampleEnvironment(SampleEnvironmentNormal)
{
   room = 0;
   roomHF = 0;
   airAbsorption = 1.0;
};

datablock AudioSampleEnvironment(SampleEnvironmentNone)
{
   room = -10000;
   roomHF = -10000;
   airAbsorption = 0.0;
};

SampleEnvironmentNormal are the default environment settings. SampleEnvironmentNone are settings that will
disable environment effects. This one is good for GUI sounds or background music. To use them, add them to
your AudioProfile like this:

datablock AudioProfile(RifleFireSound)
{
	filename = "~/data/sound/mgunfire.wav";
	description = AudioDefault3d;
	preload = true;
	environment = "SampleEnvironmentNormal";
};