The guys at SourceForge came through for me; a member of their staff read my diary entry from yesterday and they wrote me back to say that a GIS entry has been implemented in the Trove, under Scientific/Engineering. Now that's service!
(I am guessing that this change had already been requested through proper channels, and was in the works; still it's commendable that they would spot my obscure diary entry, and even more commendable that they took the time to reply.)