Issue 1382, hash randomization on python 3.3 causes reconfigurations

waflib/Configure.py

@@ -334,7 +334,7 @@ class ConfigurationContext(Context.Context):
 		:type node: :py:class:`waflib.Node.Node`
 		"""
 		super(ConfigurationContext, self).post_recurse(node)
-		self.hash = hash((self.hash, node.read('rb')))
+		self.hash = Utils.h_list((self.hash, node.read('rb')))
 		self.files.append(node.abspath())
 
 	def eval_rules(self, rules):

waflib/Scripting.py

@@ -567,7 +567,7 @@ def autoconfigure(execute_method):
 			else:
 				h = 0
 				for f in env['files']:
-					h = hash((h, Utils.readf(f, 'rb')))
+					h = Utils.h_list((h, Utils.readf(f, 'rb')))
 				do_config = h != env.hash
 
 		if do_config:

waflib/Utils.py

@@ -478,7 +478,8 @@ def quote_define_name(s):
 
 def h_list(lst):
 	"""
-	Hash lists. For tuples, using hash(tup) is much more efficient
+	Hash lists. For tuples, using hash(tup) is much more efficient,
+	except on python >= 3.3 where hash randomization assumes everybody is running a web application.
 
 	:param lst: list to hash
 	:type lst: list of strings