xtraeme: calling pthread_attr_getschedparam() before _setschedparam() will
always return ENOMEM because at least on NetBSD, _setschedparam needs
to be called first.

--- gthread/gthread-posix.c.orig	2008-10-10 07:22:09.000000000 +0200
+++ gthread/gthread-posix.c	2008-10-10 07:22:29.000000000 +0200
@@ -343,9 +343,9 @@ g_thread_create_posix_impl (GThreadFunc 
 # ifdef G_THREADS_IMPL_POSIX
   {
     struct sched_param sched;
-    posix_check_cmd (pthread_attr_getschedparam (&attr, &sched));
     sched.sched_priority = g_thread_priority_map [priority];
     posix_check_cmd_prio (pthread_attr_setschedparam (&attr, &sched));
+    posix_check_cmd (pthread_attr_getschedparam (&attr, &sched));
   }
 # else /* G_THREADS_IMPL_DCE */
   posix_check_cmd_prio