This makes building OpenLDAP easier.

Change-Id: Id64699f95477fb8fb98957027c97070ebf41f4b1
Reviewed-on: https://boringssl-review.googlesource.com/7407
Reviewed-by: David Benjamin <davidben@google.com>

Windows doesn't like struct literals:
..\decrepit\dsa\dsa_decrepit.c(85) : warning C4204: nonstandard extension used : non-constant aggregate initializer

Change-Id: I12541f2883ecbb10c85cddfae8d2adbbb1365ae3
Reviewed-on: https://boringssl-review.googlesource.com/7364
Reviewed-by: Adam Langley <agl@google.com>

This function was deprecated by OpenSSL in 0.9.8 but code that uses it
still exists. This change adds an implementation of this function to
decreipt/ to support these programs.

Change-Id: Ie99cd00ff8b0ab2675f2b1c821c3d664b9811f16
Reviewed-on: https://boringssl-review.googlesource.com/7360
Reviewed-by: David Benjamin <davidben@google.com>

(Imported from upstream's 52e028b9de371da62c1e51b46592517b1068d770.)

Change-Id: If980d774671b9b5ba997db3fd7d4043525a85609
Reviewed-on: https://boringssl-review.googlesource.com/6445
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>

This is cleaner than the OpenSSL code was, at least, but it's hardly
beautiful due to the "standard" that it's trying to implement. (See
[1].)

The references from the PKCS#8 code to various ciphers have digests have
been made into function pointer references rather than NIDs so that the
linker will be able to drop RC2 code for binaries that don't call PKCS#8
or #12 functions.

A bug that crashed OpenSSL/BoringSSL when parsing a malformed PKCS#8
structure has been fixed too.

See https://www.cs.auckland.ac.nz/~pgut001/pubs/pfx.html

Change-Id: Iaa1039e04ed7877b90792835e8ce3ebc3b29f89e
Reviewed-on: https://boringssl-review.googlesource.com/1592
Reviewed-by: Adam Langley <agl@google.com>

Initial fork from f2d678e6e8 (1.0.2 beta).

(This change contains substantial changes from the original and
effectively starts a new history.)