Rename root_sets table to commit_sets table in the database, and rename related classes elsewhere from RootSet to CommitSet to more precisely reflect what they are. This is particularly confusing once we introduce the actual custom root files user uploads.
Created attachment 304336 [details] Renames the table
Created attachment 304337 [details] Added migration SQL
Comment on attachment 304337 [details] Added migration SQL rs=me
Committed r213952: <http://trac.webkit.org/changeset/213952>