Initial work for openssl-1.1 support

[xeroc]

This updates the fc version to another branch that started fixing openssl-1.1
it also disabled deterministic_openssl_rand because it's not used anywhere

This repo builds just fine.

For reference:
bitshares/bitshares-fc#7

[xeroc]

Unfortunately, the required patch is still not merged into websocketcpp. These are the steps necessary to compile bitshares-core / bitshares-fc with openssl-1.1:

cd libraries/fc/vendor/websocketpp
git checkout 0.7.0
git remote add locutus https://github.com/LocutusOfBorg/websocketpp/
git fetch locutus
git cherry-pick 1dd07113f2a7489444a8990a95be42e035f8e9df

Then recompile.

[xeroc]

I have pushed an update to the fc repo.
Since the websocketpp repo needed a manual patch, I forked it over to bitshares project on github.
To apply the submodule change, you need to

git submodule sync --recursive
git submodule update --init --recursive

[jmjatlanta]

I have been using this PR along with the boost_1.66 PR with great success. Please fix the merge conflict, (perhaps just a rebase?) and I believe we're good-to-go!

[xeroc]

@jmjatlanta This pull request actually only picks a certain 'fc' commit (and comments some old CMake project out) ... The real thing happens in bitshares/bitshares-fc#7

[pmconrad]

Replaced by #921