[bgpd] CID #4,#5,#9,#10, simplify aspath_print_vty usage

[bgpd] CID #4,#5,#9,#10, simplify aspath_print_vty usage

2006-05-12 Paul Jakma <paul.jakma@sun.com>

	* bgp_aspath.{c,h}: (aspath_print_vty) take a format string,
	  so as to reduce burden on callers, all in bgp_route.c
	* bgp_route.c: (route_vty_out{,tmp}) Update to match
	  aspath_print_vty, simplifying checks needed to get spacing
	  right. CID #4,#5.
	  ({damp,flap}_route_vty_out) Ditto, CID #9, #10