Dear all.

Some large data classes (elements, atoms and sticks) use 

           __slots__

now.


Cheers,

Blendphys.

Moving PDB importer into trunk,

thanks to Clemens Barth for making all edits requested to have this in an acceptable quality level.

There are a few todo's still but at this point the script is better then the previous PDB importer in trink, so better to include this in the 2.61 release.

[[Split portion of a mixed commit.]]

removing this PDB importer in preparation to replace with a re-written one which supports more file types

by Mariusz Maximus & Jong89