commit miss...

* sample/tkextlib/treectrl/explorer.rb: File.executable? returns true
    even if it's plain text file. (this function only checks access right)

again.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8296 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/tk/sample/tkextlib/treectrl/explorer.rb

@@ -144,11 +144,7 @@ def demoExplorerDetails(t)
     when '.txt'
       img = 'small-txt'
     else
-      if FileTest.executable?(file)
-        img = 'small-exe'
-      else
-        img = 'small-file'
-      end
+      img = 'small-file'
     end
 
     type = ext.upcase