Added trivial preprocessor test

[SVN r14218]

status/regression.cfg

@@ -48,6 +48,7 @@ compile libs/preprocessor/test/logical_test.cpp
 compile libs/preprocessor/test/preprocessor_test.cpp
 compile libs/preprocessor/test/repeat_2nd_test.cpp
 compile libs/preprocessor/test/repeat_test.cpp
+compile libs/preprocessor/test/trivial_test.cpp
 run libs/rational/rational_example.cpp
 run libs/rational/rational_test.cpp
 run libs/random/random_test.cpp