[vala] libgvc: add Gvc.Graph.read_string and Gvc.Context.render_data

[Evan Nemerson <evann src gnome org>]

commit f6846d59cd2da6a5888b5e0ff70915671ea5099a
Author: Martin Olsson <martin minimum se>
Date:   Fri Mar 5 14:15:31 2010 -0800

    libgvc: add Gvc.Graph.read_string and Gvc.Context.render_data
    
    Based on a patch by pancake <pancake youterm com>
    
    Fixes bug 611007.

 vapi/libgvc.vapi |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/vapi/libgvc.vapi b/vapi/libgvc.vapi
index d77023c..36da041 100644
--- a/vapi/libgvc.vapi
+++ b/vapi/libgvc.vapi
@@ -88,6 +88,9 @@ namespace Gvc {
 
 		[CCode (cname = "gvRenderJobs")]
 		public int render_jobs (Graph graph);
+
+		[CCode (cname = "gvRenderData")]
+		public int render_data (Graph graph, [CCode (type = "char*")] string file_type, [CCode (type = "char**")] out uint8[] output_data);
 	}
 
 	[Compact]
@@ -125,6 +128,9 @@ namespace Gvc {
 		[CCode (cname = "agread")]
 		public static Graph read (GLib.FileStream file);
 
+		[CCode (cname = "agmemread")]
+		public static Graph read_string (string str);
+
 		[CCode (cname = "agnode")]
 		public Node create_node ([CCode (type = "char*")] string node_name);