xP: produce a custom font for IRC formatting

Given that the generated file needs a manual adjustment,
its small size, and the dependencies involved,
it will be checked in to the repository.

xP/Makefile

@@ -2,7 +2,7 @@
 .SUFFIXES:
 
 outputs = xP proto.go public/proto.js public/mithril.js
-all: $(outputs)
+all: $(outputs) public/ircfmt.woff2
 
 xP: xP.go proto.go
 	go build -o $@
@@ -10,6 +10,8 @@ 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 ../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 > $@
+public/ircfmt.woff2: gen-ircfmt.awk
+	awk -v Output=$@ -f gen-ircfmt.awk
 public/mithril.js:
 	curl -Lo $@ https://unpkg.com/mithril/mithril.js
 clean: