Bug #39736 --> pass in the charset to quote the body with. this helps fix charset over ride has

no effect on quoting.
r=nhotta

mailnews/compose/public/nsIMsgQuote.idl

@@ -28,10 +28,14 @@
 interface nsIMsgQuote : nsISupports {
 	/*
 	 * This is the primary interface for quoting a particular message specified
-	 * by a URI
+	   by a URI
+	 */
+ 
+    /* aCharset is an option parameter which can be used to force the message to be 
+	   quoted using a particular charset. 
 	*/
 	void QuoteMessage(in wstring msgURI, in boolean quoteHeaders, in
-                             nsIStreamListener aStreamListener);
+                             nsIStreamListener aStreamListener, in wstring aCharset);
     readonly attribute nsIMimeStreamConverterListener quoteListener;
     readonly attribute nsIChannel quoteChannel;
 	readonly attribute nsIStreamListener streamListener;