1d4a5d950d7d8689d33876431539209d55b51fda
use a separate contactNormal1/contactNormal2 for each body in btSolverConstraint. Thanks to Richard McDaniel for the patch.
Bullet is a 3D Collision Detection and Rigid Body Dynamics Library for games and animation. Free for commercial use, including Playstation 3, open source under the ZLib License. See the Bullet_User_Manual.pdf for more info and visit the Bullet Physics Forum at http://bulletphysics.org
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