swap sign of TOF bin for GE HDF5

Images are now fine.

src/include/stir/listmode/CListRecordGEHDF5.h

@@ -108,7 +108,7 @@ namespace RDF_HDF5 {
 
       inline int get_tof_bin() const
          {
-             return static_cast<int>(deltaTime);
+             return static_cast<int>(-deltaTime);
          }
 #if STIRIsNativeByteOrderBigEndian
       // Do byteswapping first before using this bit field.