sys/sema: add same_get_value()
sys/sema: add same_get_value()

OlegHahm/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,kaspar030/RIOT,OlegHahm/RIOT,ant9000/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,ant9000/RIOT,ant9000/RIOT,kaspar030/RIOT,jasonatran/RIOT,kaspar030/RIOT,kYc0o/RIOT,authmillenon/RIOT,miri64/RIOT,jasonatran/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,miri64/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,ant9000/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,miri64/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,authmillenon/RIOT,kYc0o/RIOT,OTAkeys/RIOT,jasonatran/RIOT,authmillenon/RIOT,authmillenon/RIOT,ant9000/RIOT,miri64/RIOT,OlegHahm/RIOT,authmillenon/RIOT,miri64/RIOT,kYc0o/RIOT,jasonatran/RIOT