Postgres changes: ALTER TABLE uses TYPE, not ENGINE
Compare column type names case-insensitively, so we don't constantly try to change BIGINT to bigint
Store SQL calls in a var for easier debugging
Postgres: fix incorrect code in getIndexInfo so that column names are now returned as expected.
Make sure we use the unquoted tablename when generating index names.
Remove the "emptyIndexName" hack.
Remove BTREE when creating indexes: that's the default now and forever.
Merge pull request #262 from turnstep/master

Postgres changes: ALTER TABLE uses TYPE, not ENGINE