Prefer application/xml over text/xml for charset reasons

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3855 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_view/helpers/javascripts/prototype.js

@@ -704,7 +704,7 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
     var requestHeaders =
       ['X-Requested-With', 'XMLHttpRequest',
        'X-Prototype-Version', Prototype.Version,
-       'Accept', 'text/javascript, text/xml, text/html, */*' ];
+       'Accept', 'text/javascript, text/html, application/xml, text/xml, */*'];
 
     if (this.options.method == 'post') {
       requestHeaders.push('Content-type',

railties/html/javascripts/prototype.js

@@ -704,7 +704,7 @@ Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
     var requestHeaders =
       ['X-Requested-With', 'XMLHttpRequest',
        'X-Prototype-Version', Prototype.Version,
-       'Accept', 'text/javascript, text/xml, text/html, */*' ];
+       'Accept', 'text/javascript, text/html, application/xml, text/xml, */*'];
 
     if (this.options.method == 'post') {
       requestHeaders.push('Content-type',