Added test_xtime

[SVN r14913]

status/Jamfile

@@ -293,6 +293,11 @@ include testing.jam ;
                 : #input-files
                 : $(thread-requirements)
             ]
+            [ run libs/thread/test/test_xtime.cpp $(thread-sources)
+                : #args
+                : #input-files
+                : $(thread-requirements)
+            ]
         ;
     }