certik/csympy — pull request #86 by certik (2013-08-26 19:15:46+00:00)
Title: [WIP] Implement subs()

This PR might require to simply stop using `Teuchos::RCP`, because we want to do things like this:
```
RCP self = rcp_const_cast(rcp(this));
```
And pass `self` around. This works with our own `RCP`, because we store the refcount in the class itself, but can't work with `Teuchos::RCP`.