fix test runner
updated build
build option
Merge pull request #90 from Kuang11/master

Added m_bIsFrontWheel to btWheelInfo, setCcdMotionThreshold and setCcdSweptSphereRadius to btRigidBody.
Add btCollisionObject::setRollingFriction to ammo.idl
Merge pull request #91 from playcanvas/master

Add btCollisionObject::setRollingFriction to ammo.idl
Add btCollisionObject::setAnisotropicFriction
Merge pull request #93 from playcanvas/master

Add btCollisionObject::setAnisotropicFriction
Merge pull request #92 from Kuang11/master

Added btGeneric6DofSpringConstraint, set/get breakingThrehsold to btTypedConstraint, btContactSolverInfo and two btWheelInfo attributes.
Merge pull request #1 from kripken/master

Merge back with base fork.
Added btGeneric6DofSpringConstraint and linear/angular limits to btGeneric6DofConstraint.
btGeneric6DofConstraint implements btTypedConstraint
Added getNumConstraintRefs and getConstraintRef to btRigidBody, removeAction to btDynamicsWorld and getCurrentSpeedKmHour to btRaycastVehicle.
Added btCollisionWorld::btGenerateInternalEdgeInfoAlias and btCollisionWorld::InterpolatedClosestRayResultCallback to Bullet, added the use of InterpolatedClosestRayResultCallback to btDefaultVehicleRaycaster::castRay. Added btCollisionWorld::btGenerateInternalEdgeInfoAlias and btTriangleInfoMap to ammo.idl.
Added btCollisionWorld::setCustomMaterialCombinerCallback and btCollisionWorld::CustomMaterialCombinerCallback to Bullet. Added btCollisionWorld::setCustomMaterialCombinerCallback to ammo.idl.