Fix uninitialized constant Qt::TQt in qtruby.rb

This resolves Bug 2442

Signed-off-by: Michel Nolard <michel.nolard@gmail.com>
(cherry picked from commit f46bd0ca15)

qtruby/rubylib/qtruby/lib/Qt/qtruby.rb

@@ -17,7 +17,7 @@
  ***************************************************************************/
 =end
 
-module Qt
+module TQt
 	module DebugLevel
 		Off, Minimal, High, Extensive = 0, 1, 2, 3
 	end
@@ -34,12 +34,12 @@ module Qt
 	end
 
 	@@debug_level = DebugLevel::Off
-	def Qt.debug_level=(level)
+	def TQt.debug_level=(level)
 		@@debug_level = level
 		Internal::setDebug TQt::QtDebugChannel::TQTDB_ALL if level >= DebugLevel::Extensive
 	end
 
-	def Qt.debug_level
+	def TQt.debug_level
 		@@debug_level
 	end