- Postgres doesn't care about names for uniqueness of keys unlike mysql
because internally it keeps "oid" values to keep track of everything.
Unfortunately this means that the information_schema standard is
inadequate to differentiate between constraints that are named the
same (which isn't possible in mysql, but is in pg). Hence we have to
dip into the pg specific schemas for better or worse.
- Fix naming of the sample schema in the README since it would fail for
mysql due to duplicate naming.
- Mark test schema up so we don't fix the bad names so we catch
regressions here.
- Fix#85
