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.
Fixed -strparse option: it didn't work if used more than once (this was due
to the d2i_ASN1_TYPE call parsing a freed buffer). On Win32 the file wincrypt.h
#define's X509_NAME and PKCS7_SIGNER_INFO causing clashes so these are #undef'ed
