Broken by:
commit 9ace0b5422
Author: Dylan Baker <baker.dylan.c@gmail.com>
Date: Wed May 20 15:49:11 2015 -0700
glapi: glX_proto_size.py: use argparse instead of getopt
Which changed most, but not all, callers to use --header-tag instead of
-h.
Reviewed-by: Dylan Baker <baker.dylan.c@gmail.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>