* (IMPORTANT BUG FIX) scan of event keywords doesn't work on recent

versions of Tck/Tk
* (bug fix) initialize error of instance variable on TkComposite
* (bug fix) initialize error on encoding-system on MultiTkIp
* (bug fix) trouble on destroying widgets
* (new) add JP and EN version of Ruby/Tk widget demos


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4249 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/tk/sample/demos-en/hello

@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+require 'tk'
+
+unless /^8\.[1-9]/ =~ Tk::TCL_VERSION && !Tk::JAPANIZED_TK
+  require 'tkencoding'
+end
+
+TkButton.new(nil,
+	'text'=>"Hello Ruby world!",
+	'font'=>TkFont.new('k14'),
+	'command'=>proc{print "Hello Ruby world!\n"; exit}
+).pack
+
+Tk.mainloop