Remove prefixes from SQL column names

Many columns in the SQL tables are prefixed with a letter or shortened version of the table name.  Like variables.vqualname, functions.fqualname, types.tqualname, and so on.  This is unneeded and leads to confusion since some columns are prefixed and others aren't.

These changes remove the prefixes.  Whenever a table has a qualname column is is now just called "qualname".