Add csympy_rcp.h
Add WITH_CSYMPY_RCP CMake option
Use CSymPy namespace instead of Teuchos
Use CSymPy::RCP and similar
Add missing headers
Implement RCP and Ptr
Add reference counter to Basic
Update Python wrappers to use CSymPy::RCP
Make sure we include csympy_config.h
Only declare refcount_ if WITH_CSYMPY_RCP is on
Travis: Test our RCP as well
Add a missing include
Merge pull request #73 from certik/rcp

Implement our own faster RCP implementation