components: rework classes

- outsourced some classes cc_item.cpp/h, cc_draw.cpp/h
- added extra methodes for simple use of some basic components extra.cpp/h
- rework clock handling: use timer class, reworked members for
  enable/disable clock with external timer events,
  tryed to fix some display issues related with infoclock and
  time osd clock in moviebrowser, channellist, menuus
- reworked hide/kill handling, removed parameter for hide(), try to use
  cached backgrounds for other constallations, paint cache, image cache (all beta)
- reworked shadow/frame handling, add shadow modes for left/right
  arrangement, TODO: repaint for existant instances required
- reworked color gradient assignment (beta)

... Note: I had a data crash in my local git tree
and i tryed to restore my historie, but most was lost. Therefore here
the commit is large

src/driver/framebuffer.h

@@ -35,7 +35,7 @@
 #include <map>
 #include <OpenThreads/Mutex>
 #include <OpenThreads/ScopedLock>
-
+#include <sigc++/signal.h>
 #define fb_pixel_t uint32_t
 
 typedef struct fb_var_screeninfo t_fb_var_screeninfo;
@@ -69,7 +69,7 @@ typedef struct gradientData_t
 #define ConnectLineBox_Width	16 // px
 
 /** Ausfuehrung als Singleton */
-class CFrameBuffer
+class CFrameBuffer : public sigc::trackable
 {
 	private:
 
@@ -323,6 +323,7 @@ class CFrameBuffer
 		void fbNoCheck(bool noCheck) { fb_no_check = noCheck; }
 		void doPaintMuteIcon(bool mode) { do_paint_mute_icon = mode; }
 		void blit(void) {}
+		sigc::signal<void> OnAfterSetPallette;
 };
 
 #endif