added Application::commandPath()
GH #49: NetworkInterface::list doesn't return MAC

GH #49: NetworkInterface::list doesn't return MAC addresses
GH #36: 'distclean' requires 3 traversals of project tree
fix VS 2003 warnings
add Error.cpp/h to VS2003 solution
spaces -> tabs
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update .travis.yml
updated CHANGELOG
added item to release notes
Sync with upstream.