* Added EESoundEnvironment (9048) thingtype
* Reordered EE thingtypes in base/things.edf by spawn number
* Set sound environments from thingtypes at map spawn
* Ability to propagate data from an ereverb_t structure into the reverb
  engine

Subversion-branch: /trunk
Subversion-revision: 2847
Refactoring to get "earsec" in sound engine.

Subversion-branch: /trunk
Subversion-revision: 2848