Author: Ole Streicher <debian@liska.ath.cx>
Subject: Remove function that is only in cpl >= 6.3 to establish compability
 with older (stable) versions and allow backporting.
--- a/src/er_main.c
+++ b/src/er_main.c
@@ -641,7 +641,6 @@
 
 cpl_msg_set_domain (PACKAGE);
 cpl_msg_set_time_off ();
-cpl_msg_set_threadid_off ();
 cpl_msg_set_domain_on ();
 cpl_msg_set_component_off ();