Merge patch from Philippe Batailler for French man page build

Get things closer to building again, but not yet

Patches applied:

 * philippe.batailler@free.fr--2005/apt--mainMatt--0--patch-1
   fix xml error

doc/fr/apt.ent.fr

@@ -1,4 +1,4 @@
-<!-- -*- mode: sgml; mode: fold -*- -->
+<?xml version="1.0" encoding="iso-8859-15"?>
 
 <!-- Some common paths.. -->
 <!ENTITY docdir "/usr/share/doc/apt/">