Hide symbols in cast, idea, and ocsp

ok tb@

Add an essentially empty ocsp_local.h and include it in the files
that will need it in the upcoming bump.

discussed with jsing

Move the now internal X.509-related structs into x509_lcl.h.
Garbage collect the now unused LIBRESSL_CRYPTO_INTERNAL and
LIBRESSL_OPAQUE_X509. Include "x509_lcl.h" where needed and
fix a couple of un

Move the now internal X.509-related structs into x509_lcl.h.
Garbage collect the now unused LIBRESSL_CRYPTO_INTERNAL and
LIBRESSL_OPAQUE_X509. Include "x509_lcl.h" where needed and
fix a couple of unnecessary reacharounds.

ok jsing

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Send the function codes from the error functions to the bit bucket,
as was done earlier in libssl. Thanks inoguchi@ for noticing
libssl had more reacharounds into this.
ok jsing@ inoguchi@

Expand ASN1_ITEM_rptr macros - no change in generated assembly.

Fix from kinichiro.inoguchi@gmail.com to ensure that OCSP uses
Generalized Time on requests as per RFC6960

None of these need to include <openssl/rand.h>

Only import cryptlib.h in the four source files that actually need it.
Remove the openssl public includes from cryptlib.h and add a small number
of includes into the source files that actually need t

Only import cryptlib.h in the four source files that actually need it.
Remove the openssl public includes from cryptlib.h and add a small number
of includes into the source files that actually need them. While here,
also sort/group/tidy the includes.

ok beck@ miod@

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tags as requested by miod and tedu

More KNF.

KNF

import openssl-0.9.8j

OpenSSL 0.9.7 stable 2002 05 08 merge