From: Nathan Phillip Brink <binki@gentoo.org>
Date: 2011/05/14
Subject: Don't assume that /usr/bin/python-config* is a python
	script. Fixes build on portage-multilib where abi-wrapper is a
	bash script wrapping around the different python-configs.

--- a/waflib/Tools/python.py
+++ b/waflib/Tools/python.py
@@ -169,7 +169,7 @@
 		conf.find_program('python-config-%s'%num,var='PYTHON_CONFIG',mandatory=False)
 	includes=[]
 	if conf.env.PYTHON_CONFIG:
-		for incstr in conf.cmd_and_log(conf.env.PYTHON+[conf.env.PYTHON_CONFIG,'--includes']).strip().split():
+		for incstr in conf.cmd_and_log([conf.env.PYTHON_CONFIG,'--includes']).strip().split():
 			if(incstr.startswith('-I')or incstr.startswith('/I')):
 				incstr=incstr[2:]
 			if incstr not in includes: