2.83
remove a few unused variable, and add casts to avoid warnings
fixes for Linux
Revert "replace unstable Gyroscopic force calculations with stable back Euler derived"
Fix linux|mingw shared|static build
fix some out-of-bounds error in the OpenCL rigid body pipeline re-enable an OpenCL/gpu rigid body example (box-box stack)
disable memmove in btDbvt forgot to reset clock
add .bullet extension in File/Open on Mac add importer support for FIXED_CONSTRAINT_TYPE, to be replaced by btGeneric6DofSpring2Constraint btFixedConstraint now derives from btGeneric6DofSpring2Constraint
Merge pull request #275 from erwincoumans/master
Merge remote-tracking branch 'bp/master'
ftello64 -> ftell and fopen64 -> fopen (to make Mac OSX happy) disable some warning (no idea why weak_link is there)
only compile Bullet 3 if desired (with CMake) remove empty namespace
fix and re-enable sphere-box collision algorithm, Issue 643
add a btFixedConstraint with toggle between btGeneric6DofConsraint and btFixedConstraint in VoronoiFractureDemo