Build against installed Box2D
Add targets tester, check.  Build using Google Test source tree.
Initial tests for class Path.
Merge branch 'unit-testing' into update-box2d
Fix Path and unit tests for Box2D 2.3.
Add tests for class Transform.
Add tests for class Transform.
Merge branch 'unit-testing' into update-box2d
Merged unit test changes into makefile.
Define separate VELOCITY and POSITION iterations counts.  Use b2Rot instead of b2Mat for joint.rotate().
Clean tester binary.
Merge branch 'master' into update-box2d
Removing in-tree copy of Box2D 2.0.1.
Non-working attempt at updating for Box2D 2.3.1.
Merge branch 'master' into update-box2d
Compiles and runs, but too many "strokes" are moving.  For example, on the title screen, the START box falls by itself completing the level.
Merge branch 'master' into update-box2d
Remove unnecessary include.
Reset sleeping flags after first simulation step to recreate Box 2.0.1 behaviour.
Merge branch 'unit-testing'