Add Makefile with dist rule

Makes for easy creation of the tar file.

Makefile

@@ -0,0 +1,26 @@
+EMACS = emacs
+
+version := $(shell $(EMACS) -Q -batch -visit mode-icons.el -eval \
+	"(progn (require 'package) (princ (elt (package-buffer-info) 3)))")
+pkgname := mode-icons-$(version)
+sources := mode-icons.el $(wildcard icons/*.*)
+dests := $(addprefix $(pkgname)/,$(sources))
+
+all:
+dist: $(pkgname).tar
+
+$(pkgname).tar: $(pkgname)/mode-icons-pkg.el $(dests)
+	tar cjf $(pkgname).tar $(pkgname)
+
+$(pkgname)/mode-icons-pkg.el: mode-icons.el
+	if [ ! -d "$(pkgname)" ]; then mkdir $(pkgname); fi
+	$(EMACS) -batch -Q -script "$(CURDIR)/scripts/genpkg.el" > \
+		$(pkgname)/mode-icons-pkg.el
+
+$(dests): $(pkgname)/%:
+	if [ ! -d "$(dir $@)" ]; then mkdir -p $(dir $@); fi
+	cp $* $@
+
+clean:
+	rm -f $(pkgname).tar
+	rm -rf $(pkgname)/

scripts/genpkg.el

@@ -0,0 +1,9 @@
+(require 'package)
+
+(find-file "mode-icons.el")
+(let ((info (package-buffer-info)))
+  (with-current-buffer (get-buffer-create "pkg")
+    (insert "(define-package \"" (elt info 0) "\"\n"
+            "                \"" (elt info 3) "\"\n"
+            "                \"" (elt info 2) "\")")
+    (princ (buffer-string))))