Revamp evp_compute_key_nif()
Revamp evp_compute_key_nif()

* Bug fix: Some EVP_PKEY_* return <= 0 on failure and 1 on success.
* Fix a possible memory leak where enif_alloc_binary() wasn't converted
  into a term or freed in all paths.

legoscia/otp,mikpe/otp,erlang/otp,bsmr-erlang/otp,isvilen/otp,RoadRunnr/otp,lrascao/otp,jj1bdx/otp,dgud/otp,dumbbell/otp,emacsmirror/erlang,mikpe/otp,vladdu/otp,getong/otp,rlipscombe/otp,dgud/otp,vinoski/otp,legoscia/otp,g-andrade/otp,potatosalad/otp,isvilen/otp,electricimp/otp,bjorng/otp,ferd/otp,aboroska/otp,bjorng/otp,bsmr-erlang/otp,legoscia/otp,vinoski/otp,vinoski/otp,electricimp/otp,ferd/otp,bjorng/otp,erlang/otp,electricimp/otp,rlipscombe/otp,kvakvs/otp,vladdu/otp,mikpe/otp,bsmr-erlang/otp,dgud/otp,lrascao/otp,potatosalad/otp,erlang/otp,potatosalad/otp,dumbbell/otp,potatosalad/otp,bsmr-erlang/otp,electricimp/otp,getong/otp,uabboli/otp,uabboli/otp,bsmr-erlang/otp,emacsmirror/erlang,erlang/otp,RoadRunnr/otp,emacsmirror/erlang,rlipscombe/otp,lrascao/otp,RoadRunnr/otp,bsmr-erlang/otp,legoscia/otp,jj1bdx/otp,potatosalad/otp,lrascao/otp,mikpe/otp,kvakvs/otp,g-andrade/otp,potatosalad/otp,vladdu/otp,getong/otp,electricimp/otp,isvilen/otp,isvilen/otp,aboroska/otp,jj1bdx/otp,dgud/otp,uabboli/otp,ferd/otp,jj1bdx/otp,uabboli/otp,bjorng/otp,rlipscombe/otp,vladdu/otp,rlipscombe/otp,mikpe/otp,aboroska/otp,legoscia/otp,emacsmirror/erlang,dumbbell/otp,jj1bdx/otp,lrascao/otp,getong/otp,bsmr-erlang/otp,vinoski/otp,erlang/otp,uabboli/otp,uabboli/otp,potatosalad/otp,legoscia/otp,aboroska/otp,bjorng/otp,electricimp/otp,dgud/otp,dumbbell/otp,kvakvs/otp,emacsmirror/erlang,ferd/otp,RoadRunnr/otp,aboroska/otp,g-andrade/otp,emacsmirror/erlang,legoscia/otp,dumbbell/otp,getong/otp,ferd/otp,erlang/otp,jj1bdx/otp,bjorng/otp,dgud/otp,vinoski/otp,aboroska/otp,erlang/otp,g-andrade/otp,potatosalad/otp,aboroska/otp,mikpe/otp,bjorng/otp,dgud/otp,RoadRunnr/otp,legoscia/otp,dgud/otp,potatosalad/otp,dgud/otp,getong/otp,kvakvs/otp,uabboli/otp,uabboli/otp,ferd/otp,isvilen/otp,getong/otp,isvilen/otp,g-andrade/otp,uabboli/otp,RoadRunnr/otp,emacsmirror/erlang,isvilen/otp,jj1bdx/otp,rlipscombe/otp,mikpe/otp,isvilen/otp,vladdu/otp,ferd/otp,rlipscombe/otp,jj1bdx/otp,kvakvs/otp,erlang/otp,bjorng/otp,aboroska/otp,mikpe/otp,dumbbell/otp,emacsmirror/erlang,g-andrade/otp,isvilen/otp,mikpe/otp,ferd/otp,vladdu/otp,vinoski/otp,getong/otp,g-andrade/otp,vinoski/otp,vladdu/otp,emacsmirror/erlang,RoadRunnr/otp,dgud/otp,jj1bdx/otp,erlang/otp,g-andrade/otp,RoadRunnr/otp,dumbbell/otp,vinoski/otp,electricimp/otp,dumbbell/otp,legoscia/otp,electricimp/otp,rlipscombe/otp,vladdu/otp,getong/otp,kvakvs/otp,vinoski/otp,bsmr-erlang/otp,electricimp/otp,kvakvs/otp,mikpe/otp,vladdu/otp,bsmr-erlang/otp,bjorng/otp,dumbbell/otp,lrascao/otp,rlipscombe/otp,erlang/otp,lrascao/otp,RoadRunnr/otp,ferd/otp,potatosalad/otp,lrascao/otp,jj1bdx/otp,aboroska/otp,kvakvs/otp,g-andrade/otp,kvakvs/otp,isvilen/otp,vinoski/otp,lrascao/otp,emacsmirror/erlang,getong/otp,bjorng/otp,dumbbell/otp,g-andrade/otp,rlipscombe/otp