benchmarks/glmark2: unbreak build with python311

Traceback (most recent call last):
  File "waflib/Scripting.py", line 104, in waf_entry_point
    set_main_module(os.path.normpath(os.path.join(Context.run_dir,Context.WSCRIPT_FILE)))
  File "waflib/Scripting.py", line 135, in set_main_module
    Context.g_module=Context.load_module(file_path)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "waflib/Context.py", line 343, in load_module
    code=Utils.readf(path,m='rU',encoding=encoding)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "waflib/Utils.py", line 117, in readf
    f=open(fname,m)
      ^^^^^^^^^^^^^
ValueError: invalid mode: 'rUb'

benchmarks/glmark2/files/patch-python311

@@ -0,0 +1,33 @@
+https://gitlab.com/ita1024/waf/-/commit/68997828c850
+
+--- waflib/ConfigSet.py.orig	2021-12-23 14:46:11 UTC
++++ waflib/ConfigSet.py
+@@ -140,7 +140,7 @@ class ConfigSet(object):
+ 		Utils.writef(filename,''.join(buf))
+ 	def load(self,filename):
+ 		tbl=self.table
+-		code=Utils.readf(filename,m='rU')
++		code=Utils.readf(filename,m='r')
+ 		for m in re_imp.finditer(code):
+ 			g=m.group
+ 			tbl[g(2)]=eval(g(3))
+--- waflib/Context.py.orig	2021-12-23 14:46:11 UTC
++++ waflib/Context.py
+@@ -109,7 +109,7 @@ class Context(ctx):
+ 				cache[node]=True
+ 				self.pre_recurse(node)
+ 				try:
+-					function_code=node.read('rU',encoding)
++					function_code=node.read('r',encoding)
+ 					exec(compile(function_code,node.abspath(),'exec'),self.exec_dict)
+ 				finally:
+ 					self.post_recurse(node)
+@@ -340,7 +340,7 @@ def load_module(path,encoding=None):
+ 		pass
+ 	module=imp.new_module(WSCRIPT_FILE)
+ 	try:
+-		code=Utils.readf(path,m='rU',encoding=encoding)
++		code=Utils.readf(path,m='r',encoding=encoding)
+ 	except EnvironmentError:
+ 		raise Errors.WafError('Could not read the file %r'%path)
+ 	module_dir=os.path.dirname(path)