When releasing OpenSSL patch-level maintenance updates,
we do not want to rebuild binaries using it.
And since they guarantee ABI stability, we do not have to.

Without this patch, warning messages were produced
that confused users:
https://bugzilla.opensuse.org/show_bug.cgi?id=1129411

Fixes bug 30190; bugfix on 0.2.4.2-alpha commit 7607ad2b



Signed-off-by: Bernhard M. Wiedemann <bwiedemann@suse.de>

This is largely conjectural, based on online documentation for NSS
and NSPR.

These are now part of crypto_init.c.  The openssl-only parts now
live in crypto_openssl_mgt.c.

I recommend reviewing this patch with -b and --color-moved.

I am calling the crypto library "crypt_ops", since I want
higher-level crypto things to be separated from lower-level ones.
This library will hold only the low-level ones, once we have it
refactored.

crypto_openssl_header_version_str and crypto_openssl_version_str in
crypto_openssl_mgt.c should be static.

As we're trying not to have all the other modules in Tor, we moved the openssl
namespace includes back into crypto.c and crypto_openssl_mgt.c files.

Follows #24658.

Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>

Renamed free_openssl() to crypto_openssl_free_all(). Also we made variables and
functions static again.

Follows #24658.

Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>

Rename crypto_openssl.[ch] to crypto_openssl_mgt.[ch] because it is possible we
need crypto_openssl.[ch] in the future.

Follows #24658.

Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>

Add free_openssl() function to free the memory allocated for OpenSSL version
management variables. It is required since OpenSSL management has been isolated
from the crypto module.

Follows #24658.

Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>

Add two new files (crypto_openssl.c, crypto_openssl.h) as new module of
crypto.[ch]. This new module includes all functions and dependencies related
to OpenSSL management. Those have been removed from crypto.[ch].

All new changes related to OpenSSL management must be done in these files.

Follows #24658

Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>