Improve Modules Interface

Now the modules are created using a factory instead of static allocated.
  The same module can be applied to different sequences.
  Pain in the ass memory free

modules/FrameDifference.cpp

@@ -41,6 +41,15 @@ static PlaYUVerModuleDefinition FrameDifferenceDef =
 
 FrameDifference::FrameDifference()
 {
+  /* Module Definition */
+  m_iModuleType = FRAME_PROCESSING_MODULE;
+  m_pchModuleCategory = "Measurements";
+  m_pchModuleName = "FrameDifference";
+  m_pchModuleTooltip = "Measure the difference between two images (Y plane),  Y1 - Y2, with max absolute diff of 128";
+  m_uiModuleRequirements = MODULE_REQUIRES_NEW_WINDOW;
+  m_uiNumberOfFrames = MODULE_REQUIRES_TWO_FRAMES;
+  m_bApplyWhilePlaying = APPLY_WHILE_PLAYING;
+
   m_pcFrameDifference = NULL;
   setModuleDefinition( FrameDifferenceDef );
 }