Changeset 1112 in orxonox.OLD

srrd/trunk: implemented counting semaphores. semaphores now use a thread key to store per thread name, id and lockcount. thread_sem_*() changed to use a key instad of a semaphore as argument. introduced thread_sem_reinit() which has to be called for every used semaphore in a thread before using that semaphore for locking. this assocates the semaphore with the current threads key. lets hope this is enough to trace our last problem…