cmake DUNE_SYS_HAS_LIB_DC1394 examples

LSTS/dune cmake/Libraries/DC1394.cmake :36 

else(DUNE_SYS_HAS_LIB_DC1394 AND DUNE_SYS_HAS_DC1394_CAMERA_H)

LSTS/dune cmake/Libraries/DC1394.cmake :38 

endif(DUNE_SYS_HAS_LIB_DC1394 AND DUNE_SYS_HAS_DC1394_CAMERA_H)