Remove more old code and enable standalone mode.

test/static_mutex/static_mutex_test.cpp

@@ -22,6 +22,7 @@
 #include <iostream>
 #include <iomanip>
 
+#ifdef BOOST_REGEX_CXX03
 //
 // we cannot use the regular Boost.Test in here: it is not thread safe
 // and calls to BOOST_CHECK will eventually crash on some compilers 
@@ -205,3 +206,6 @@ int main()
 
    return total_failures;
 }
+#else
+int main() {}
+#endif