fix the sqlite break. There were two issue here:

1. type issues on column create in ado.net
 2. not setting a field in the ado.net row translates into explicitely
    setting it to null in sqlite land (because it can't read the defaults
    stanzas out of the database)

Things should work again after this.

OpenSim/Data/SQLite/SQLiteRegionData.cs

@@ -859,7 +859,7 @@ namespace OpenSim.Data.SQLite
             // click action
             createCol(prims, "ClickAction", typeof (Byte));
 
-            createCol(prims, "Material", typeof(Int32));
+            createCol(prims, "Material", typeof(Byte));
 
             // Add in contraints
             prims.PrimaryKey = new DataColumn[] {prims.Columns["UUID"]};
@@ -1535,6 +1535,7 @@ namespace OpenSim.Data.SQLite
             row["ClickAction"] = prim.ClickAction;
 
             row["SalePrice"] = prim.SalePrice;
+            row["Material"] = prim.Material;
         }
 
         /// <summary>