check_ssl() fails to support LibreSSL on OSX.
Currently running OSX 10.14 (Mojave) with python 3.7.0
```
$ pip install p4python
Collecting p4python
Using cached https://files.pythonhosted.org/packages/37/2f/ae9214f6b08bde402d88a9cdf6faf307cfbe50fee04aeb4b15f89bf09fcd/p4python-2017.2.1615960.tar.gz
Complete output from command python setup.py egg_info:
Attempting to load API from ftp.perforce.com
Loaded API into /var/folders/3n/6jmv45nx3q78_n6rjk4cqtjrfmt6lc/T/p4api-2017.2.1611521
****************************************************
Cannot match OpenSSL Version string 'LibreSSL 2.6.4
'
****************************************************
***********************************************
** Cannot build P4Python without SSL support **
***********************************************
```