added missing test case to preprocessor test suite

[SVN r29747]

status/Jamfile

@@ -154,6 +154,7 @@ subinclude libs/wave/test/build ;          # test-suite wave
           [ compile libs/preprocessor/test/logical.cpp ]
           [ compile libs/preprocessor/test/repetition.cpp ]
           [ compile libs/preprocessor/test/selection.cpp ]
+          [ compile libs/preprocessor/test/seq.cpp ]
           [ compile libs/preprocessor/test/slot.cpp ]
           [ compile libs/preprocessor/test/tuple.cpp ]
         ;

status/Jamfile.v2

@@ -148,6 +148,7 @@ build-project ../libs/variant/test ;           # test-suite variant
           [ compile libs/preprocessor/test/logical.cpp ]
           [ compile libs/preprocessor/test/repetition.cpp ]
           [ compile libs/preprocessor/test/selection.cpp ]
+          [ compile libs/preprocessor/test/seq.cpp ]
           [ compile libs/preprocessor/test/slot.cpp ]
           [ compile libs/preprocessor/test/tuple.cpp ]
         ;