Do not warn about an ununsed function, if it is marked with __attribute__((used)).
[cparser] / symbol_t.h
2008-03-22 Matthias Braun- make use of new atomic_type_properties in ast2firm
2008-03-06 Matthias Braunremove loop_unrolling opt
2008-02-20 Matthias Brauncommit some files I forgot