Replace deprecated alDopplerVelocity with alSpeedOfSound per OpenAL 1.1 spec
Remove references to alDopplerVelocity

Let's load driver even if it doesn't have the deprecated alDopplerVelocity.
OpenGL2: Fix pshadows for MDR models
Fix native trap_BotMutateGoalFuzzyLogic
Fix s_alDopplerSpeed default value
Merge remote-tracking branch 'upstream/master'