The newer version was built on Ubuntu 22.04 which has downward
library incompatibilites with other Linux distributions/versions.
Note that this updates OpenSim.Region.PhysicsModule.BulletS.dll.config
and also copies prev version to libBulletSim.so for those who don't
update all the configuration files on upgrades.
Encorporates latest Bullet physics engine and updated wrapper with version reporting.
Previous versions left in bin/lib64/BulletSim-2.64-20230903-x86_64.dll
and similar for .so if reversion is needed.
Update bin/OpenSim.Region.PhysicsModule.BulletS.dll.config to reference
versioned BulletSim binary file.
New versions copied to unversion named binary files.