applied patch from Malcolm Tredinnick to avoid tabs in python sources,

* python/tests/*.py: applied patch from Malcolm Tredinnick
  to avoid tabs in python sources, should fix #135095
Daniel
diff --git a/python/tests/xpathext.py b/python/tests/xpathext.py
index c497b55..4769626 100755
--- a/python/tests/xpathext.py
+++ b/python/tests/xpathext.py
@@ -28,14 +28,14 @@
     res = ctxt.xpathEval("foo(1)")
     if res != 2:
         print "xpath extension failure"
-	sys.exit(1)
+        sys.exit(1)
     i = i - 1
 i = 10000
 while i > 0:
     res = ctxt.xpathEval("bar(1)")
     if res != "3":
         print "xpath extension failure got %s expecting '3'"
-	sys.exit(1)
+        sys.exit(1)
     i = i - 1
 doc.freeDoc()
 ctxt.xpathFreeContext()