Submitted by: Nils Larsch <nla@trustcenter.de>

sure they are available in opensslconf.h, by giving them names starting
with "OPENSSL_" to avoid conflicts with other packages and by making
sure e_os2.h will cover all platform-specific cases together with
opensslconf.h.

I've checked fairly well that nothing breaks with this (apart from
external software that will adapt if they have used something like
NO_KRB5), but I can't guarantee it completely, so a review of this
change would be a good thing.

like Malloc, Realloc and especially Free conflict with already existing names
on some operating systems or other packages.  That is reason enough to change
the names of the OpenSSL memory allocation macros to something that has a
better chance of being unique, like prepending them with OPENSSL_.

This change includes all the name changes needed throughout all C files.

Fix to stop null being added to attributes.
Modify X509_LOOKUP, X509_INFO to handle auxiliary info.

and to lots of PEM_... functions.
Submitted by: Damien Miller <dmiller@ilogic.com.au>

the the PBE code and a new constant PKCS5_DEFAULT_ITER for the default
iteration count if it is passed as zero.

those functions without having a parameter list declaration.
(There are various similar cases left ...)

PS: Feel free to move the IMPLEMENT_STACK_OF(X509_INFO) from
    crypto/asn1/x_info.c to any other place where you think it fits better.
    X509_INFO is a structure slightly spreaded over ASN.1, X509 and PEM code,
    so I found no definitive location for IMPLEMENT_STACK_OF(X509_INFO).  In
    crypto/asn1/x_info.c it's at least now bundled with X509_INFO_new() and
    friends.

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Reviewed by:
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