[Qgis-developer] SAGA Interface

[Camilo Polymeris]

The three missing files should be there now...
'sagacommand.py' contains the code that runs saga_cmd.
I think that module will change a lot, though. I'll first define an
interface for a "sagaprovider" class or something, and implement both
saga_cmd and saga_api versions of it.

Some paths are hard-coded in the current version, like the location of
the saga modules [sagacommand.py], and saga_cmd must be in PATH.

Camilo