Per the Red Hat problems in issue13627 I just tried this patch on Fedora 16.  Everything built just fine.  However, the patch doesn't apply cleanly to tip an longer:

[meadori@motherbrain cpython]$ patch -p1 < ../patches/dh.patch 
patching file Doc/library/ssl.rst
Hunk #2 succeeded at 715 (offset 27 lines).
patching file Lib/ssl.py
Hunk #1 succeeded at 68 with fuzz 2.
patching file Lib/test/dh512.pem
patching file Lib/test/ssl_servers.py
Hunk #1 succeeded at 180 (offset 1 line).
Hunk #2 succeeded at 194 (offset 1 line).
patching file Lib/test/test_ssl.py
Hunk #2 succeeded at 101 with fuzz 2.
Hunk #3 succeeded at 541 (offset 3 lines).
Hunk #4 FAILED at 1200.
Hunk #5 succeeded at 1858 with fuzz 2 (offset 29 lines).
1 out of 5 hunks FAILED -- saving rejects to file Lib/test/test_ssl.py.rej
patching file Modules/_ssl.c
Hunk #1 succeeded at 1922 (offset 20 lines).
Hunk #2 succeeded at 2082 (offset 22 lines).
Hunk #3 succeeded at 2539 with fuzz 2 (offset 24 lines).

After fixing the unit test hunk everything builds and the SSL unit tests pass.