Update comments regarding JRuby comparisons.

test/test_utils.rb

@@ -1,5 +1,5 @@
 #--
-# Copyright (c) 2008-2013 Philip Ross
+# Copyright (c) 2008-2014 Philip Ross
 # 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -136,11 +136,11 @@ def assert_sub_process_returns(expected_lines, code, extra_load_path = [], requi
   end
 end
 
-# JRuby 1.7.5 and later consider DateTime instances that differ by less than 
+# JRuby 1.7.5 to 1.7.9 consider DateTime instances that differ by less than 
 # 1 millisecond to be equivalent (https://github.com/jruby/jruby/issues/1311).
 #
 # A few test cases compare at a resolution of 1 microsecond, so this causes
-# failures on JRuby 1.7.5.
+# failures on JRuby 1.7.5 to 1.7.9.
 #
 # Determine what the platform supports and adjust the tests accordingly.
 DATETIME_RESOLUTION = (0..5).collect {|i| 10**i}.find {|i| (DateTime.new(2013,1,1,0,0,0) <=> DateTime.new(2013,1,1,0,0,Rational(i,1000000))) < 0}