Postgres, fix quote_column_name definition, fixes many tests

Author: JesseChavez

lib/arjdbc/postgresql/adapter.rb

@@ -866,9 +866,12 @@ class PostgreSQLAdapter < AbstractAdapter
     include ArJdbc::Abstract::DatabaseStatements
     include ArJdbc::Abstract::StatementCache
     include ArJdbc::Abstract::TransactionSupport
-    include ArJdbc::PostgreSQL
     include ArJdbc::PostgreSQLConfig
 
+    # NOTE: after AR refactor quote_column_name became class and instance method
+    include ArJdbc::PostgreSQL
+    extend ArJdbc::PostgreSQL
+
     require 'arjdbc/postgresql/oid_types'
     include ::ArJdbc::PostgreSQL::OIDTypes
     include ::ArJdbc::PostgreSQL::DatabaseStatements