~yerinalexey/hare-openssl

Update per stdlib and language changes
Fix compilation with latest harec and stdlib
Update per stdlib changes
examples/*: remove load_verify_locations

It works without it just fine. Also, the certificates path was wrong
anyway.
Restructure README
Add a new example demonstrating the use of poll with openssl
Add a way to get a file descriptor for the SSL connection
Complete README with usage and installation instructions
Add a typical library Makefile
Move example.ha into examples/get.ha
Add docstring for bio_do_handshake
Remove verify_result comment
bio_set_conn_hostname: split host and port arguments
Fix error handling for BIO_ctrl

They can also return 0 on failure
Implement an io::stream wrapper for BIO
Flesh out error handling
Initial commit