Updated meshoptimizer.
Updated meshoptimizer.

LWJGL-CI/bgfx,bkaradzic/bgfx,bkaradzic/bgfx,jpcy/bgfx,jpcy/bgfx,jdryg/bgfx,emoon/bgfx,jdryg/bgfx,jdryg/bgfx,bkaradzic/bgfx,mendsley/bgfx,emoon/bgfx,bkaradzic/bgfx,emoon/bgfx,LWJGL-CI/bgfx,mendsley/bgfx,mendsley/bgfx,jpcy/bgfx,jpcy/bgfx,LWJGL-CI/bgfx,jdryg/bgfx,LWJGL-CI/bgfx