Added all changes from old 4.0 version:

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pstack/linuxthreads.h

@@ -0,0 +1,28 @@
+/* $Header$ */
+
+/*
+ * LinuxThreads specific stuff.
+ */
+
+#ifndef	pstack_linuxthreads_h_
+#define	pstack_linuxthreads_h_
+
+#include	<pthread.h>
+#include	"pstacktrace.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Tell other threads to dump stacks...
+ */
+int
+linuxthreads_notify_others(	const int	signotify);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* pstack_linuxthreads_h_ */
+