[openssl-dev] [openssl.org #3964] Fix OPENSSL_NO_STDIO build

[Rich Salz via RT]

We fixed this in a slightly different way. We made BIO_new_file and BIO_s_file
return an alternate implementation that returns run-time failures. Almost all
of the OpenSSL code uses the BIO object, so we didn't have to remove that. We
did #ifdef out any routine that had a "FILE*" param or local variable.
--
Rich Salz, OpenSSL dev team; rsalz at openssl.org