* 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

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2847 86ba831e-150c-0410-ab35-e06eaae15ed9
Refactoring to get "earsec" in sound engine.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2848 86ba831e-150c-0410-ab35-e06eaae15ed9