Do material convention not working in some cases

[ochounos]

With the new material notation formats, in some cases this optionis not working properly.
I have created a cube with these materials:

• materialA
• 004__test__physDefault
• test2__2__physDefault
• cube__006__test_3__physNone
• 007__test4

The cube is exported well and all the material managed properly, no problem at all, they are all valid materials, but if I apply in this cube the Do material notation some materials are not well converted:

• cube__01__materialA__physDefault
• cube__02__004__test__physDefault <- this one is not valid
• cube__03__test2_2__physDefault__physDefault <- this one is not valid
• cube__04__test_3__physNone
• cube__05__007__test4__physDefault <- this one is not valid

[ochounos]

This function could make use of the whole get_materials code renumbering the materials also. Check #192
The code of get_materials could call a function to retrieve the materials renumbered but not changing them in the blender file. A boolean param to the function could do the trick: rename them on blender file or just take them on the fly.