* lib/tempfile.rb: fix confusing inspect.

previous Tempfile#inspect says it is a File, but actually
  it is not a File.

    t = Tempfile.new("foo") #=> #<File:/tmp/foo20121106-31970-1ffbum0>
    t.is_a? File #=> false

  now Tempfile#inspect returns like:

    t = Tempfile.new("foo")
    #=> #<Tempfile:/tmp/foo20121106-31970-1ffbum0>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37492 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,17 @@
+Tue Nov  6 16:50:00 2012  Masaki Matsushita  <glass.saga@gmail.com>
+
+	* lib/tempfile.rb (Tempfile#inspect): fix confusing #inspect.
+	  previous Tempfile#inspect says it is a File, but actually
+	  it is not a File.
+
+	    t = Tempfile.new("foo") #=> #<File:/tmp/foo20121106-31970-1ffbum0>
+	    t.is_a? File #=> false
+
+	  now Tempfile#inspect returns like:
+
+	    t = Tempfile.new("foo")
+	    #=> #<Tempfile:/tmp/foo20121106-31970-1ffbum0>
+
 Tue Nov  6 16:22:30 2012  Naohisa Goto  <ngotogenome@gmail.com>
 
 	* atomic.h: add #include <sys/atomic.h> for the workaround of

lib/tempfile.rb

@@ -261,6 +261,10 @@ class Tempfile < DelegateClass(File)
   end
   alias length size
 
+  def inspect
+    "#<#{self.class}:#{path}>"
+  end
+
   # :stopdoc:
   class Remover
     def initialize(data)