Add logic tribool library

[SVN r23458]

status/Jamfile

@@ -25,6 +25,7 @@ subinclude libs/function/test ;            # test-suite function
 subinclude libs/graph/test ;               # test-suite graph
 subinclude libs/io/test ;                  # test-suite io
 subinclude libs/iterator/test ;            # test-suite iterator
+subinclude libs/logic/test ;               # test-suite logic
 subinclude libs/math/test ;                # test-suite math
 subinclude libs/numeric/interval/test ;    # test-suite interval
 subinclude libs/numeric/conversion/test ;  # test-suite interval