Use correct function for setting thread name.

Correct typo that checked for pthread_set_name_np() instead of
pthread_setname_np().

Thread names should now be visible in /proc/CHILDPID/tasks/*/comm on
Linux systems.

bin/varnishd/cache/cache_main.c

@@ -92,8 +92,8 @@ THR_SetName(const char *name)
 {
 
 	AZ(pthread_setspecific(name_key, name));
-#ifdef HAVE_PTHREAD_SET_NAME_NP
-	pthread_set_name_np(pthread_self(), name);
+#ifdef HAVE_PTHREAD_SETNAME_NP
+	pthread_setname_np(pthread_self(), name);
 #endif
 }
 

config.phk

@@ -287,7 +287,7 @@ exit 0
 # HAVE_DLADDR +
 # HAVE_KQUEUE +
 # HAVE_NANOSLEEP +
-# HAVE_PTHREAD_SET_NAME_NP +
+# HAVE_PTHREAD_SETNAME_NP +
 # HAVE_SETPROCTITLE +
 # HAVE_SRANDOMDEV +
 # HAVE_TCP_KEEP +

configure.ac

@@ -248,7 +248,7 @@ AC_CHECK_FUNCS([fallocate])
 
 save_LIBS="${LIBS}"
 LIBS="${PTHREAD_LIBS}"
-AC_CHECK_FUNCS([pthread_set_name_np])
+AC_CHECK_FUNCS([pthread_setname_np])
 AC_CHECK_FUNCS([pthread_mutex_isowned_np])
 AC_CHECK_FUNCS([pthread_timedjoin_np])
 LIBS="${save_LIBS}"