dbmirror2.sql is copied from https://github.com/metabrainz/dbmirror2,
commit 5f26872. (This is the only file we need, and submodules are
"difficult.")

This is not a fork; please do not make any changes to the files here without
first submitting them upstream to dbmirror2. They should exactly mirror the
commit mentioned in the first paragraph.
