[ospfd] Implement new ospf router subcommand "log-adjacency-changes [detail]"

2006-06-28 Erik Muller <erikm@internap.com>

	* ospfd.h: Define 2 new struct ospf config flags:
	  OSPF_LOG_ADJACENCY_CHANGES and OSPF_LOG_ADJACENCY_DETAIL
	* ospf_nsm.c (nsm_change_state): Log adjacency changes if
	  requested.
	* ospf_vty.c (ospf_log_adjacency_changes): New command function
	  to implement ospf subcommand "log-adjacency-changes [detail]".
	  (no_ospf_log_adjacency_changes) Turn off log-adjacency-changes.
	  (show_ip_ospf) Show whether adjacency changes are logged.
	  (ospf_config_write) Add "log-adjacency-changes [detail]" to config.
	  (ospf_vty_init) Add ospf_log_adjacency_changes and
	  no_ospf_log_adjacency_changes.
	* ospfd.texi: Document new ospf router subcommand
	  "log-adjacency-changes [detail]".
diff --git a/doc/ospfd.texi b/doc/ospfd.texi
index ff0d78b..c859782 100644
--- a/doc/ospfd.texi
+++ b/doc/ospfd.texi
@@ -90,6 +90,13 @@
 This command should NOT be set normally.
 @end deffn
 
+@deffn {OSPF Command} {log-adjacency-changes [detail]} {}
+@deffnx {OSPF Command} {no log-adjacency-changes [detail]} {}
+Configures ospfd to log changes in adjacency.  With the optional
+detail argument, all changes in adjacency status are shown.  Without detail,
+only changes to full or regressions are shown.
+@end deffn
+
 @deffn {OSPF Command} {passive interface @var{interface}} {}
 @deffnx {OSPF Command} {no passive interface @var{interface}} {}