Mayavi on FreeBSD

First of all, thanks for great software!
I have made Mayavi available in FreeBSD ports system. This task needed to create 5 ports:
devel/py-apptools
devel/py-envisage
devel/py-pyface
graphics/py-mayavi
graphics/py-traitsui
All are now ready for use on current versions of FreeBSD and a patch to make it available on older versions is submitted.

There are two separate issues I'd like to discuss with developers of Mayavi.
1. Tests produce errors. Attached is the file created by command 'mayavi2 -t 2>&1 >| py-mayavi2-t.log'
[py-mayavi2-t.log.txt](https://github.com/enthought/mayavi/files/414937/py-mayavi2-t.log.txt)
Can you help with these errors, please?
2. Porting demanded to make small changes to the setup scripts of graphics/py-mayavi port. Without these changes the automated registering of installed files and folders had problems with empty folders and folders containing only folders. Patches are also attached. Is it feasible to apply these patches in the main repository?

[patch-tvtk_setup.py.txt](https://github.com/enthought/mayavi/files/414943/patch-tvtk_setup.py.txt)
[patch-setup.py.txt](https://github.com/enthought/mayavi/files/414944/patch-setup.py.txt)

Thanks again for the nice work!
Vladimir