added concept of tamper script priority

lib/core/priority.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+
+"""
+$Id$
+
+Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
+See the file 'doc/COPYING' for copying permission
+"""
+
+class PRIORITY:
+    LOWEST  = -100
+    LOWER   = -50
+    LOW     = -10
+    NORMAL  = 0
+    HIGH    = 10
+    HIGHER  = 50
+    HIGHEST = 100