Added TypeBuilder.__SetAttributes() and MethodBuilder.__SetAttributes() to allow modying the attributes after the builder has been created.

reflect/Emit/MethodBuilder.cs

@@ -370,6 +370,11 @@ namespace IKVM.Reflection.Emit
 			get { return attributes; }
 		}
 
+		public void __SetAttributes(MethodAttributes attributes)
+		{
+			this.attributes = attributes;
+		}
+
 		public override MethodImplAttributes GetMethodImplementationFlags()
 		{
 			return implFlags;

reflect/Emit/TypeBuilder.cs

@@ -745,6 +745,11 @@ namespace IKVM.Reflection.Emit
 			get { return attribs; }
 		}
 
+		public void __SetAttributes(TypeAttributes attributes)
+		{
+			this.attribs = attributes;
+		}
+
 		public override Type[] __GetDeclaredInterfaces()
 		{
 			return Util.ToArray(interfaces, Type.EmptyTypes);