make sure we can still run the tests with JRuby 1.6.8 (syntax error in --1.8 mode)

Author: kares

test/db/postgresql/array_type_test.rb

@@ -64,8 +64,8 @@ def test_added_column_with_default
   end
 
   def test_change_column_with_array
-    @connection.add_column :pg_arrays, :snippets, :string, array: true, default: []
-    @connection.change_column :pg_arrays, :snippets, :text, array: true, default: "{}"
+    @connection.add_column :pg_arrays, :snippets, :string, :array => true, :default => []
+    @connection.change_column :pg_arrays, :snippets, :text, :array => true, :default => '{}'
 
     PgArray.reset_column_information
     column = PgArray.columns.find { |c| c.name == 'snippets' }