Adding =encoding tag into POD for Perl 5.16

--- Tidy.pm

+++ Tidy.pm

@@ -771,6 +771,8 @@ sub AUTOLOAD { # methods (created as necessary)

 sub DESTROY { } # do nothing but define in case && to calm test warnings

 127;

+=encoding iso8859-1

+

 =head1 NAME

 XML::Tidy - tidy indenting of XML documents