Add a 'Stamp' widget.

Place one or multiple stamps on scanned pages in defined locations.

A stamp is understood here as
 - a transparent text in a transparent frame with no borders
 - an opaque text on an opaque background with no borders.

Stamp parameters:
 - text
 - font
 - foreground colour
 - background colour
 - angle of rotation
 - transparency.

Locations:
 - centre
 - cardinal directions
 - inter-cardinal directions.

Resources/InsaneWidget/XScannerWidget.cpp

@@ -9,13 +9,15 @@
 
 #include "XScannerWidget.h"
 #include "XClientData.hpp"
-#include "Common.h"
+#include "DefsInsaneWidget.h"
 #include <libinsane/constants.h>
 #include <fstream>
 #include <vector>
 
 using namespace std;
 
+IMPLEMENT_CLASS( XScannerWidget, ScannerWidget )
+
 XScannerWidget::~XScannerWidget()
 {}