Moltemplate

1) new feature: added the "create_static_var" command.
2) fixed a bug in ltemplify.py's python API.
3) added a complex new DNA example into the "examples/coarse_grained" subdirectory.

Simplified the scoping rules for Object definitions and static counter variables (eg aton:C, bond:CH, angle:HCH, ...). Hopefully this should make it easier to create LT files using namespaces and (nested) class definitions which behave in a way which is more similar to languages like python.

(This may eventually ease the transition to creating a version of moltemplate where static node definitions are implemented as python class definitions. It would be nice to have a version of moltemplate which can be run from within python itself.)

This version has a stable, working version of ltemplify.py.

This is the first version of moltemplate where I bothered to click on the "Draft a Release" button.
In the future, I'll try to remember to do that.