Some make corrections for HP and related,

Changed refresh order so that window-less widgets
    don't get overdrawn anymore,
  Prevent GTK from filtering our supposedly unneeded
    expose events,
  Block all expose calls if a resize is requested and
    do a full redraw then, thus removing flicker and
    behaving like wxMSW,
  Moved some doubled expose and draw code from GtkPizza
    to the respective callbacks in window.cpp,
  Set idle priority to a higher value (which should
    indicate a lower priority if I interpret glib.h
    correctly) but the desired side-effect didn't
    really show up.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6533 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/window.h

@@ -186,6 +186,8 @@ public:
     bool                 m_isFrame:1;        /* faster than IS_KIND_OF */
     bool                 m_acceptsFocus:1;   /* not wxStaticBox, not wxStaticBitmap etc.  */
     bool                 m_isScrolling;
+    bool                 m_clipPaintRegion;  /* TRUE after ScrollWindow() */
+    bool                 m_queuedFullRedraw; /* TRUE after DoMoveWindow */
 
     // these are true if the style were set before the widget was realized
     // (typcally in the constructor) but the actual GTK style must not be set