Merge isisd into the Quagga's framework:
  - add privs support
  - use misc quagga's definitions
  - make it compile"able"
  - fix segfault cases related to hostname()
  - add debug isis xxx command

This patch has been approved by Paul Jakma.
diff --git a/lib/thread.h b/lib/thread.h
index 0a45d8f..9a8c2be 100644
--- a/lib/thread.h
+++ b/lib/thread.h
@@ -131,6 +131,7 @@
 #define thread_add_read(m,f,a,v) funcname_thread_add_read(m,f,a,v,#f)
 #define thread_add_write(m,f,a,v) funcname_thread_add_write(m,f,a,v,#f)
 #define thread_add_timer(m,f,a,v) funcname_thread_add_timer(m,f,a,v,#f)
+#define thread_add_timer_msec(m,f,a,v) funcname_thread_add_timer_msec(m,f,a,v,#f)
 #define thread_add_event(m,f,a,v) funcname_thread_add_event(m,f,a,v,#f)
 #define thread_execute(m,f,a,v) funcname_thread_execute(m,f,a,v,#f)
 
@@ -142,6 +143,8 @@
 				 int (*)(struct thread *), void *, int, char*);
 struct thread *funcname_thread_add_timer (struct thread_master *,
 				 int (*)(struct thread *), void *, long, char*);
+struct thread *funcname_thread_add_timer_msec (struct thread_master *,
+				 int (*)(struct thread *), void *, long, char*);
 struct thread *funcname_thread_add_event (struct thread_master *,
 				 int (*)(struct thread *), void *, int, char*);
 void thread_cancel (struct thread *);