Fixed physics tests, disabled out-of-date octree tests, and renamed /
added QTestExtensions to the tests folder (IDE view).
ALL_BUILD will now succeed.
cmake . -GXcode
creates a CMakeFiles direcory in the test directory, causing the creation of the xcode files to fail with an the source directory does not contain a CMakeList.txt file.
This patch updates the CMakeList.txt file in the test directory to ignore that created dir.