PR for ADMAnalysis Trace function with incorrect interface

[Samuel Cupp]

The new macros that came with PreSync set read-only variables to const, which led to compiler warnings appearing in ADMAnalysis because Trace does not respect these consts. I fixed the consts, but I also noticed in the process that the interface.ccl lists the tensor Trace is tracing is listed as OUT instead of IN. I created a pull request with these changes.

[Samuel Cupp]

Please review.

[Roland Haas]

Applied as git hash 7d4a1e95 "ADMAnalysis: fixed comments" of einsteinanalysis will revert if this actually causes problems.