Roll BoringSSL.

Roll BoringSSL.

This includes several fixes from BoringSSL:
- d2i_AutoPrivateKey stopped working
- Use RtlGenRandom on Windows since it works in the sandbox
- Assemble Win64 on Yasm; GYP and Ninja do not have build-in rules
  for ml64.exe. This fixes the boringssl_unittests build on Win64.

Full list of changes pulled below:

817ec34 Rename example_sign to evp_test.
8fb1921 Allow PKCS#8 in d2i_AutoPrivateKey.
dfc2948 Call RtlGenRandom directly in RAND_bytes.
0e2a3cf Remove KSSL_DEBUG.
cf2d4f4 Test renegotiation with BoringSSL as the client.
ec48af4 Make SSL_MODE_AUTO_RETRY the default.
8cfd8ad Remove unused EVP_PKEY_ASN1_METHODs and flags.
029a779 Remove BN_LONG macro.
2a0ee11 Remove remnants of EVP_MD_FLAG_PKEY_METHOD_SIGNATURE.
a0ca1b7 DTLS1_AD_MISSING_HANDSHAKE_MESSAGE does not exist.
be700c6 Remove remnant of MS SGC second ClientHello.
2ae77d2 Test server-side renegotiation.
8b1d900 Fix unused variables in bn/generic.c
bc786a9 Build with yasm on Win64 as well.
eee7306 Get bssl tool building on Windows.
f44aa68 Fix standalone Win64 build.
e92fc18 Remove remnant of SRP.
fd617a5 Port ssl3_{get,send}_server_key_exchange to EVP_Digest{Verify,Sign}*.
e6def37 Remove ERR_LIB_PKCS12.

BUG=338884, 429919, 428671
Committed: https://crrev.com/6e8ed1298508737a338bdb2e31773a35f68c4bc7
Cr-Commit-Position: refs/heads/master@{#302901}

[davidben, 2014-11-05 18:51:55]

davidben@chromium.org changed reviewers:
+ agl@chromium.org

[davidben, 2014-11-05 18:51:56]

Note: this depends on https://codereview.chromium.org/684093011/

[agl, 2014-11-05 18:55:39]

lgtm

[davidben, 2014-11-05 22:34:17]

The CQ bit was checked by davidben@chromium.org

[commit-bot: I haz the power, 2014-11-05 22:34:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/693893006/20001

[commit-bot: I haz the power, 2014-11-05 23:35:40]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-11-05 23:36:34]

Patchset 2 (id:??) landed as
https://crrev.com/6e8ed1298508737a338bdb2e31773a35f68c4bc7
Cr-Commit-Position: refs/heads/master@{#302901}