[libgda] Fixing Field.to_string(). * For now is not possible to convert Field<G> as non generic due to GLib.V

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 352dad95f6b0d770bc87d00e7f6cca1ed8cf405a
Author: Daniel Espinosa <despinosa src gnome org>
Date:   Tue Jan 10 18:35:55 2012 -0600

    Fixing Field.to_string().
    * For now is not possible to convert Field<G> as non generic due to GLib.Value
    use in Vala.

 libgda/data/Field.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgda/data/Field.vala b/libgda/data/Field.vala
index b0ad5f8..cee893d 100644
--- a/libgda/data/Field.vala
+++ b/libgda/data/Field.vala
@@ -43,7 +43,7 @@ namespace GdaData
 		public DbField.Attribute attributes { 
 			get { return _attributes; }
 		}
-		public string to_string () { return (string) val; }
+		public string to_string () { return "GdaData.Field"; }
 		public Field (string col_name, DbField.Attribute attr) 
 		{
 			_column_name = col_name;