[lib] Centralise Zserv route type information, auto-generate redist strings

[lib] Centralise Zserv route type information, auto-generate redist strings

2006-05-23 Paul Jakma <paul.jakma@sun.com>

	* route_types.txt: New file, table of ZEBRA_ROUTE definitions.
	* route_types.awk: New script, to parse previous and generate
	  (for now) redistribute string defines.
	* Makefile.am: build route_types.h using previous two, ala
	  memtypes.h, include the script and table file in EXTRA_DIST.
	* command.h: pull in route_types.h, add a REDIST_STR define.