Table and Column comments are not being migrated to postgresql

[rraub]

It looks like this script is not migrating over any of the comments from mysql.
Using the query 'EXPLAIN tablename' only gets the column Name, Type, Nullity, Key, Default, and Extra.
If we were to use 'SHOW FULL COLUMNS FROM tablename' we would also get the Comments for each column (and a few other bits).
There is also the comments on the table itself to be migrated.