Let other OS set the thread name as well

Amends 83aa540 to handle FreeBSD and OpenBSD (at least).

bin/varnishd/cache/cache_main.c

@@ -92,7 +92,9 @@ THR_SetName(const char *name)
 {
 
 	AZ(pthread_setspecific(name_key, name));
-#ifdef HAVE_PTHREAD_SETNAME_NP
+#if defined(HAVE_PTHREAD_SET_NAME_NP)
+	pthread_set_name_np(pthread_self(), name);
+#elif defined(HAVE_PTHREAD_SETNAME_NP)
 	pthread_setname_np(pthread_self(), name);
 #endif
 }

config.phk

@@ -287,6 +287,7 @@ exit 0
 # HAVE_DLADDR +
 # HAVE_KQUEUE +
 # HAVE_NANOSLEEP +
+# HAVE_PTHREAD_SET_NAME_NP +
 # HAVE_PTHREAD_SETNAME_NP +
 # HAVE_SETPROCTITLE +
 # HAVE_SRANDOMDEV +

configure.ac

@@ -248,6 +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])