Move protocol code generators to liberty

This part of the project is now more or less stable.

xP/Makefile

@@ -2,16 +2,17 @@
 .SUFFIXES:
 AWK = env LC_ALL=C awk
 
+tools = ../liberty/tools
 outputs = xP proto.go public/proto.js public/mithril.js
 all: $(outputs) public/ircfmt.woff2
 
 xP: xP.go proto.go
 	go build -o $@
-proto.go: ../xC-gen-proto.awk ../xC-gen-proto-go.awk ../xC-proto
-	$(AWK) -f ../xC-gen-proto.awk -f ../xC-gen-proto-go.awk \
-		-v PrefixCamel=Relay ../xC-proto > $@
-public/proto.js: ../xC-gen-proto.awk ../xC-gen-proto-js.awk ../xC-proto
-	$(AWK) -f ../xC-gen-proto.awk -f ../xC-gen-proto-js.awk ../xC-proto > $@
+proto.go: $(tools)/lxdrgen.awk $(tools)/lxdrgen-go.awk ../xC.lxdr
+	$(AWK) -f $(tools)/lxdrgen.awk -f $(tools)/lxdrgen-go.awk \
+		-v PrefixCamel=Relay ../xC.lxdr > $@
+public/proto.js: $(tools)/lxdrgen.awk $(tools)/lxdrgen-mjs.awk ../xC.lxdr
+	$(AWK) -f $(tools)/lxdrgen.awk -f $(tools)/lxdrgen-mjs.awk ../xC.lxdr > $@
 public/ircfmt.woff2: gen-ircfmt.awk
 	$(AWK) -v Output=$@ -f gen-ircfmt.awk
 public/mithril.js: