Update guide generation task for latest Mizuho commandline options. Add admonition icons for the guides.

railties/Rakefile

@@ -279,7 +279,8 @@ guides.each do |guide_name|
   output = "doc/guides/#{guide_name}/#{guide_name}.html"
   guides_html_files << output
   file output => Dir["doc/guides/#{guide_name}/*.txt"] do
-    sh "mizuho", input, "--template", "manualsonrails", "--multi"
+    sh "mizuho", input, "--template", "manualsonrails", "--multi-page",
+       "--icons-dir", "../icons"
   end
 end
 

railties/doc/guides/icons/README

@@ -0,0 +1,5 @@
+Replaced the plain DocBook XSL admonition icons with Jimmac's DocBook
+icons (http://jimmac.musichall.cz/ikony.php3). I dropped transparency
+from the Jimmac icons to get round MS IE and FOP PNG incompatibilies.
+
+Stuart Rackham