Added signals2.

[SVN r51540]

status/Jamfile.v2

@@ -112,6 +112,7 @@ run-tests
     scope_exit/test             # test-suite scope_exit
     serialization/test          # test-suite serialization
     signals/test                # test-suite signals
+    signals2/test               # test-suite signals2
     smart_ptr/test              # test-suite smart_ptr
     spirit/classic/test         # test-suite classic spirit
     spirit/test                 # test-suite spirit_v2