lib: put route_types.txt to real use

this replaces most occurences of routing protocol lists by preprocessor
defines from route_types.h. the latter is autogenerated from
route_types.txt by a perl script (previously awk). adding a routing
protocol now is mostly a matter of changing route_types.txt and log.c.

Conflicts:

	lib/route_types.awk
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 315e919..890cc5c 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -29,10 +29,10 @@
 	privs.h sigevent.h pqueue.h jhash.h zassert.h memtypes.h \
 	workqueue.h route_types.h
 
-EXTRA_DIST = regex.c regex-gnu.h memtypes.awk route_types.awk route_types.txt
+EXTRA_DIST = regex.c regex-gnu.h memtypes.awk route_types.pl route_types.txt
 
 memtypes.h: $(srcdir)/memtypes.c $(srcdir)/memtypes.awk
 	($(GAWK) -f $(srcdir)/memtypes.awk $(srcdir)/memtypes.c > $@)
 
-route_types.h: $(srcdir)/route_types.txt $(srcdir)/route_types.awk
-	($(GAWK) -f $(srcdir)/route_types.awk $(srcdir)/route_types.txt > $@)
+route_types.h: $(srcdir)/route_types.txt $(srcdir)/route_types.pl
+	@PERL@ $(srcdir)/route_types.pl < $(srcdir)/route_types.txt > $@