[vala] glib: add .data to StringBuilder

[Ryan Lortie <ryanl src gnome org>]

commit cd1dc0923fb88a5f2e69a9a134c42a7206247a21
Author: Ryan Lortie <desrt desrt ca>
Date:   Fri Feb 3 10:50:23 2012 -0500

    glib: add .data to StringBuilder
    
    To do the same thing as string.data, but without the strlen() (since we
    already know this from the GString's length field).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=669313

 vapi/glib-2.0.vapi |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index 45f5640..25b228f 100644
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -4068,6 +4068,14 @@ namespace GLib {
 		public string str;
 		public ssize_t len;
 		public ssize_t allocated_len;
+
+		public uint8[] data {
+			get {
+				unowned uint8[] res = (uint8[]) this.str;
+				res.length = (int) this.len;
+				return res;
+			}
+		}
 	}
 
 	/* String Chunks */