faster to compile.

A small selection of packages was tested going from:

Executed in  696.30 secs   fish           external
   usr time   82.98 mins  395.00 micros   82.98 mins
   sys time    9.02 mins    0.00 micros    9.02 mins

to:

Executed in  592.20 secs   fish           external
   usr time   84.84 mins  361.00 micros   84.84 mins
   sys time    8.85 mins   57.00 micros    8.85 mins

Tested by running make -j 12 and wiping staging/build_dir/target_x

Signed-off-by: Rosen Penev <rosenp@gmail.com>

This is a beta release that introduces a software fallback mechanism
that greatly speeds up smaller requests by fulfilling them in software,
avoiding the latency of switching to kernel-mode for small jobs.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

This version is up to 20% faster than 1.0.1, and allows compilation
without crypto_user information, which is currently failing for targets
still in the 4.9 kernel.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

Use a fixed ENGINES_DIR location, instead of trying to read it from the
openssl Makefile.

It also fixes the zero-copy config option not being passed down to the
cmake options.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

This is an alternate AF_ALG engine for openssl, based on the devcrypto
engine, but using the AF_ALG interface instead of /dev/crypto.

It is different than the AF_ALG engine that ships with OpenSSL:
  - it uses sync calls, instead of async
  - it suports more algorithms

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>