Use introspection in several more places. Also rename AdvectionField object 'advf' rather than 'torc' for clarity.
Merge remote-tracking branch 'geodynamics/master' into introspection_patch
Remove a TODO.
Compacted one of the lines to more closely match the way it was in geodynamics/master
Again, minimizing differences between this and geodyamics/master
Use introspection in even more places.
Simplify a few introspection queries, remove some TODOs
Missed one
Merge pull request #50 from jperryhouts/introspection_patch

Introspection patch