[test][setops] Add tupled-output tests for difference, sym_difference and union.

Author: awulkiew

test/algorithms/set_operations/difference/Jamfile

@@ -18,15 +18,16 @@ test-suite boost-geometry-algorithms-difference
     :
     [ run difference.cpp                      : : : <define>BOOST_GEOMETRY_TEST_ONLY_ONE_TYPE
                                                   : algorithms_difference ]
+    [ run difference_areal_linear.cpp       : : : : algorithms_difference_areal_linear ]
     [ run difference_l_a_sph.cpp            : : : : algorithms_difference_l_a_sph ]
     [ run difference_linear_linear.cpp      : : : : algorithms_difference_linear_linear ]
-    [ run difference_areal_linear.cpp       : : : : algorithms_difference_areal_linear ]
-    [ run difference_pl_a.cpp               : : : : algorithms_difference_pl_a ]
-    [ run difference_pl_l.cpp               : : : : algorithms_difference_pl_l ]
-    [ run difference_pl_pl.cpp              : : : : algorithms_difference_pl_pl ]
     [ run difference_multi.cpp                : : : <define>BOOST_GEOMETRY_TEST_ONLY_ONE_TYPE
                                                   : algorithms_difference_multi ]
     [ run difference_multi_areal_linear.cpp : : : : algorithms_difference_multi_areal_linear ]
     [ run difference_multi_spike.cpp          : : : <define>BOOST_GEOMETRY_TEST_ONLY_ONE_TYPE
                                                   : algorithms_difference_multi_spike ]
+    [ run difference_pl_a.cpp               : : : : algorithms_difference_pl_a ]
+    [ run difference_pl_l.cpp               : : : : algorithms_difference_pl_l ]
+    [ run difference_pl_pl.cpp              : : : : algorithms_difference_pl_pl ]
+    [ run difference_tupled.cpp             : : : : algorithms_difference_tupled ]
     ;