TimeZone#to_s uses UTC rather than GMT. References #1689.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8370 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

 *SVN*
 
+* TimeZone#to_s uses UTC rather than GMT.  #1689 [Chu Yeow]
+
 * Refactor of Hash#symbolize_keys! to use Hash#replace.  Closes #10420 [ReinH]
 
 * Fix HashWithIndifferentAccess#to_options! so it doesn't clear the options hash.  Closes #10419 [ReinH]

activesupport/lib/active_support/values/time_zone.rb

@@ -68,7 +68,7 @@ def <=>(zone)
 
   # Returns a textual representation of this time zone.
   def to_s
-    "(GMT#{formatted_offset}) #{name}"
+    "(UTC#{formatted_offset}) #{name}"
   end
 
   @@zones = nil

activesupport/test/time_zone_test.rb

@@ -67,7 +67,7 @@ def test_zone_compare
 
   def test_to_s
     zone = TimeZone.create( "Test", 4200 )
-    assert_equal "(GMT+01:10) Test", zone.to_s
+    assert_equal "(UTC+01:10) Test", zone.to_s
   end
 
   def test_all_sorted