Move calls to thread_setname() into the thread start routines and move to a single argument thread_setname()

src/evthr.c

@@ -46,6 +46,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <event2/thread.h>
 
 #include "evthr.h"
+#include "misc.h"
 
 #ifndef TAILQ_FOREACH_SAFE
 #define TAILQ_FOREACH_SAFE(var, head, field, tvar)        \
@@ -135,6 +136,7 @@ _evthr_loop(void *args)
         pthread_exit(NULL);
     }
 
+    thread_setname("evthr");
     thread->evbase = event_base_new();
     thread->event  = event_new(thread->evbase, thread->rdr,
                                EV_READ | EV_PERSIST, _evthr_read_cmd, args);