openssl: upgrade to vanilla openssl 1.0.1c
openssl: reduce memory consumption

SSL records may be as large as 16K, but are typically < 2K.  In
addition, a historic bug in Windows allowed records to be as large
32K.  OpenSSL statically allocates read and write buffers (34K and
18K respectively) used for processing records.

With this patch, OpenSSL statically allocates 4K + 4K buffers, with
the option of dynamically growing buffers to 34K + 4K, which is a
saving of 44K per connection for the typical case.

This patch is taken from the Android Open Source Project.
openssl: support handshake cut-through

Enables SSL3+ clients to send application data immediately following the
Finished message even when negotiating full-handshakes.  With this patch,
clients can negotiate SSL connections in 1-RTT even when performing
full-handshakes.

This patch is taken from the Android Open Source Project.
openssl: apply upstream sha1-armv4-large.pl patch

This is a back-port of r22768: sha1-armv4-large.pl: comply with ABI.
openssl: backward compatibility after x509 hash function change

There are many symbolic links under /etc/ssl/certs created by using hash of
the pem certificates in order for OpenSSL to find those certificate.
Openssl has a tool to help you create hash symbolic links. (See tools/c_rehash)
However the new openssl changed the hash algorithm, Unless you compile/install
the latest openssl library and re-create all related symbolic links, the new
openssl can not find some certificates because the links of those certificates
were created by using old hash algorithm, which causes some tests failed.

This patch gives a way to find a certificate according to its hash by using both
new algorithm and old algorithm.

crbug.com/111045 is used to track this issue.

This patch is taken from the Chromium project.
openssl: fix uninitialized memory access

ASN1_STRING_to_UTF8() passes an ASN1_STRING to ASN1_STRING_set() but
forgot to initialize the `length` field.

Fixes the following valgrind error:

  $ valgrind -q --track-origins=yes --num-callers=19 \
      out/Debug/node test/simple/test-tls-client-abort.js
  ==2690== Conditional jump or move depends on uninitialised value(s)
  ==2690==    at 0x784B69: ASN1_STRING_set (asn1_lib.c:382)
  ==2690==    by 0x809564: ASN1_mbstring_ncopy (a_mbstr.c:204)
  ==2690==    by 0x8090F0: ASN1_mbstring_copy (a_mbstr.c:86)
  ==2690==    by 0x782F1F: ASN1_STRING_to_UTF8 (a_strex.c:570)
  ==2690==    by 0x78F090: asn1_string_canon (x_name.c:409)
  ==2690==    by 0x78EF17: x509_name_canon (x_name.c:354)
  ==2690==    by 0x78EA7D: x509_name_ex_d2i (x_name.c:210)
  ==2690==    by 0x788058: ASN1_item_ex_d2i (tasn_dec.c:239)
  ==2690==    by 0x7890D4: asn1_template_noexp_d2i (tasn_dec.c:746)
  ==2690==    by 0x788CB6: asn1_template_ex_d2i (tasn_dec.c:607)
  ==2690==    by 0x78877A: ASN1_item_ex_d2i (tasn_dec.c:448)
  ==2690==    by 0x7890D4: asn1_template_noexp_d2i (tasn_dec.c:746)
  ==2690==    by 0x788CB6: asn1_template_ex_d2i (tasn_dec.c:607)
  ==2690==    by 0x78877A: ASN1_item_ex_d2i (tasn_dec.c:448)
  ==2690==    by 0x787C93: ASN1_item_d2i (tasn_dec.c:136)
  ==2690==    by 0x78F5E4: d2i_X509 (x_x509.c:141)
  ==2690==    by 0x7C9B91: PEM_ASN1_read_bio (pem_oth.c:81)
  ==2690==    by 0x7CA506: PEM_read_bio_X509 (pem_x509.c:67)
  ==2690==    by 0x703C9A: node::crypto::SecureContext::AddRootCerts(v8::Arguments const&) (node_crypto.cc:497)
  ==2690==  Uninitialised value was created by a stack allocation
  ==2690==    at 0x782E89: ASN1_STRING_to_UTF8 (a_strex.c:560)
openssl: don't read user input from the TTY
openssl: use dummy OPENSSL_cpuid_setup function

Use a empty implementation for function OPENSSL_cpuid_setup to resolve link
error. We should figure out how to geenrate platform specific implementation
of OPENSSL_cpuid_setup by leveraging crypto/*cpuid.pl.

This patch is taken from Chromium.
openssl: replace symlinks by #include shims

Git for Windows can't create symlinks. This works too.
openssl: update the GYP build to work with openssl 1.0.1c
openssl: remove obsolete patch files

These patches were provided by Android and Chromium. In this form they
are not useful. The ones that we need are landed as separate commits.

As of openssl 1.0.1c, three of them made it upstream:
  * npn.patch (Next Protocol Negotiation support)
  * tls_exporter.patch (RFC 5705 Keying Material Exporters for TLS)
  * openssl_no_dtls1.patch (minor bugfix)
openssl: disable harmless compiler warnings

Compile with -Wno-missing-field-initializers and -Wno-old-style-declaration.
The warnings are harmless but they clutter the build output a great deal.