[Bf-python] Compatibility with old python

[Manuel]

Great work!
Thanks to all for the effort to make this
new API perfectly compatible with old python.
Thanks to all for this great new API!

Only a little "error": to make 100% old
compatible you must add the old material attributes
specR, specG, specB 

or in all old script it must be replaced by
getSpecCol()[0], getSpecCol()[1], getSpecCol()[2].

Now I'm testing the new python with YableOOP
and MakeHuman.

Great works again!!!

Ciao,

                    Manuel