Split preprocessor unit test

[SVN r12160]

status/regression.cfg

@@ -38,6 +38,10 @@ run libs/math/quaternion/quaternion_test.cpp
 run libs/math/special_functions/special_functions_test.cpp
 run libs/pool/test/test_pool_alloc.cpp
 compile libs/preprocessor/test/preprocessor_test.cpp
+compile libs/preprocessor/test/arithmetic_test.cpp
+compile libs/preprocessor/test/logical_test.cpp
+compile libs/preprocessor/test/repeat_2nd_test.cpp
+compile libs/preprocessor/test/repeat_test.cpp
 run libs/rational/rational_example.cpp
 run libs/rational/rational_test.cpp
 run libs/random/random_test.cpp