adding Ada Lovelace's public domain portrait

Original watercolor portrait by Alfred Edward Chalon, woodcut-style
graphic by Colin Adams for the Ada Initiative, SVG conversion by Fred
the Oyster, and colorization by Kaldari, under CC0 1.0 Universal Public
Domain Dedication, from Wikimedia Commons

http://commons.wikimedia.org/wiki/File:Ada_Lovelace_color.svg
adding Grace Murray Hopper's photo

20 January 1984
Source  U.S. Naval Historical Center Online Library Photograph NH
96919-KN (jpg)
Photographer: James S. Davis

License: All information on this site is in the public domain and may be
distributed or copied unless otherwise specified. Use of appropriate
byline/photo/image credits is requested.

This file is a work of a sailor or employee of the U.S. Navy, taken or
made during the course of the person's official duties. As a work of the
U.S. federal government, the image is in the public domain.

http://en.wikipedia.org/wiki/File:Grace_Hopper.jpg
use Ada Lovelace's and Grace Hopper's images
Fixes #1650 where using a file-like object on Python 3 fails.  Use npy_PyFile_* compatibility methods instead of rolling it ourselves.
Merge pull request #1599 from ivanov/ada-grace

 Ada Lovelace and Grace Murray Hopper images in place of Lena
Clear exceptions if PyFile_Dup() fails -- we have a way to handle "non-real" file objects.
Copy over some of the Numpy file-handing compatibility functions.
Update backend_agg to use the Numpy file-handling compatibility functions.
Open files in binary mode.
Fix #570 - Reversing a 3d axis should now work properly.
Address PEP8 compliancy issue
Merge pull request #1650 from mdboom/png/fix_file_like_py3

_png.read_png crashes on Python 3 with urllib.request object
Merge remote-tracking branch 'upstream/v1.2.x'