Bug #268430 --> RSS feed doesn't correctly show HTML special chars in virtual Subject column

use reg expressions to replace html entities like &, >  and < into
their ascii equivalents.

sr=bienvenu

mail/extensions/newsblog/content/FeedItem.js

@@ -307,6 +307,12 @@ FeedItem.prototype.writeToFolder = function() {
   if (this.author && this.author.indexOf('@') == -1)
     this.author = '<' + this.author + '>';
 
+  // the subject may contain HTML entities.
+  // Convert these to their unencoded state. i.e. &amp; becomes '&'
+  this.title = this.title.replace(/&lt;/g, '<');
+  this.title = this.title.replace(/&gt;/g, '>');
+  this.title = this.title.replace(/&amp;/g, '&');
+  
   // Compress white space in the subject to make it look better.
   this.title = this.title.replace(/[\t\r\n]+/g, " ");
   this.title = mimeEncodeSubject(this.title, this.characterSet);

mail/extensions/newsblog/content/utils.js

@@ -1,7 +1,7 @@
 // XXX Rename this to global.js
 
 // Whether or not to dump debugging messages to the console.
-const DEBUG = true;
+const DEBUG = false;
 var debug;
 if (DEBUG)
   debug = function(msg) { dump(' -- FZ -- : ' + msg + '\n'); }