[vala] libxml-2.0: fix Xml.Dtd property cnames

[Evan Nemerson <evann src gnome org>]

commit 51cfad9f72e01e272d5486cd86c6fec86887e747
Author: Dan Callaghan <djc djc id au>
Date:   Sat Jan 19 19:30:12 2013 +1000

    libxml-2.0: fix Xml.Dtd property cnames
    
    Fixes bug 692060.

 vapi/libxml-2.0.vapi |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/vapi/libxml-2.0.vapi b/vapi/libxml-2.0.vapi
index f762c66..9f1a776 100644
--- a/vapi/libxml-2.0.vapi
+++ b/vapi/libxml-2.0.vapi
@@ -468,7 +468,9 @@ namespace Xml {
 		public Node* prev;
 		public Doc* doc;
 
+		[CCode (cname = "ExternalID")]
 		public weak string external_id;
+		[CCode (cname = "SystemID")]
 		public weak string system_id;
 
 		[CCode (cname = "xmlNewDtd")]