[LyX/master] Use "#!/usr/bin/env python", as elsewhere.

[Richard Heck]

commit 5d94d1b3bf435b9a6d75f9e084d15b0d6da9b244
Author: Richard Heck <rgh...@lyx.org>
Date:   Sun Jan 26 11:38:41 2014 -0500

    Use "#!/usr/bin/env python", as elsewhere.

diff --git a/lib/scripts/listerrors b/lib/scripts/listerrors
index e9b0da9..473f7ff 100755
--- a/lib/scripts/listerrors
+++ b/lib/scripts/listerrors
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 # file listerrors
 # This file is part of LyX, the document processor.