Make testing summary more compact, add unit summary (in addition to tests summary)
Add tracing to abc::testing classes’ methods
Prepare for conversion of file_path.cxx to new testing framework
Convert test/file_path.cxx to new testing framework
Fix broken abc::mstr_::grow_for()
Add src/test/file_path.cxx to abc-test VS2010 project
Fix broken Win32 implementation of abc::file_path::current_dir()