Downcase type values loaded from extension.

Reverted downcase in spec, and updated another spec to use a lower cased type ('BLOB' => 'blob').  Updated ordering of arguments in the latter spec.

lib/sqlite3/statement.rb

@@ -137,7 +137,8 @@ def get_metadata
         column_name column
       end
       @types = Array.new(column_count) do |column|
-        column_decltype column
+        val = column_decltype(column)
+        val.nil? ? nil : val.downcase
       end
     end
   end

test/test_integration_resultset.rb

@@ -118,7 +118,7 @@ def test_enumerable
   end
 
   def test_types
-    assert_equal [ "integer", "text" ], @result.types.map { |t| t.downcase }
+    assert_equal [ "integer", "text" ], @result.types
   end
 
   def test_columns

test/test_statement.rb

@@ -127,7 +127,7 @@ def test_bind_blob
       row = @db.execute('select * from foo')
 
       assert_equal ['hello'], row.first
-      assert_equal row.first.types, ['BLOB']
+      assert_equal ['blob'], row.first.types
     end
 
     def test_bind_64