Allow T3D to compile against the latest version of FMod. LowMem Software Reverb has been removed as of FMOD Ex 44409
Fixed GroundCover placement on rotated TerrainBlocks.
Trigger a terrain signal when its transform is changed.
There is no /shape/ subdirectory in art/particles any more.
compile fix for rift sdk ver 0.2.2
Merge pull request #417 from TarasPodoroga/development

There is no /shape/ subdirectory in art/particles any more.
Fixed air acceleration going wild.
Added Recast/Detour library code and module.
Added PLC_Navigation hint for gathering navmesh polygon data.
Added navmesh wrapper code and module.
Bullet Library v2.81
Merge pull request #364 from keiouu/bug/fmod-lowmem-reverb-44409

Allow T3D to compile against the latest version of FMod
Merge pull request #406 from eightyeight/ground-cover-terrain-rotation

Fixed GroundCover placement on rotated TerrainBlocks
Merge pull request #407 from eightyeight/terrain-update-trigger

Trigger a terrain signal when its transform is changed
Merge pull request #429 from eightyeight/air-control-limit

Air control speed limit
Merge pull request #431 from eightyeight/recast-pull-librecast

Recast part 1: librecast
Merge pull request #432 from eightyeight/recast-pull-plc_navigation

Recast part 2: PLC_Navigation
Merge pull request #433 from eightyeight/recast-pull-navigation

Recast part 3: wrapper classes
Merge pull request #434 from LuisAntonRebollo/Bullet_2_81

Bullet Library v2.81
Merge pull request #422 from tdev/rift-update

compile fix for rift sdk ver 0.2.2