bulletphysics/bullet3 — pull request #271 by erwincoumans (2014-10-17 20:12:06+00:00)
Title:  btHingeConstraint to set/get ERP, refactor gfx backends (work-in-progress)

add support to btHingeConstraint to set/get ERP
refactor to allow various gfx backends (work-in-progress)