[packages] quagga{,-unstable}: Merge quagga-unstable package with quagga package

* Switch to quagga 0.99.x for stable version
 * Add menuconfig option to allow selection of old 0.98.6 version
 * Makefile cleanups

git-svn-id: svn://svn.openwrt.org/openwrt/packages@23464 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/quagga/patches-old/140-holdtimer-set.patch

@@ -0,0 +1,20 @@
+--- a/bgpd/bgp_network.c
++++ b/bgpd/bgp_network.c
+@@ -109,6 +109,7 @@ bgp_accept (struct thread *thread)
+     peer->fd = bgp_sock;
+     peer->status = Active;
+     peer->local_id = peer1->local_id;
++    peer->v_holdtime = BGP_LARGE_HOLDTIME;
+ 
+     /* Make peer's address string. */
+     sockunion2str (&su, buf, SU_ADDRSTRLEN);
+--- a/bgpd/bgpd.h
++++ b/bgpd/bgpd.h
+@@ -656,6 +656,7 @@ struct bgp_nlri
+ /* BGP timers default value.  */
+ #define BGP_INIT_START_TIMER                     5
+ #define BGP_ERROR_START_TIMER                   30
++#define BGP_LARGE_HOLDTIME                     240
+ #define BGP_DEFAULT_HOLDTIME                   180
+ #define BGP_DEFAULT_KEEPALIVE                   60 
+ #define BGP_DEFAULT_ASORIGINATE                 15