Create new Std library for cryptographic functions

Inspired from a forum post: http://hpccsystems.com/bb/viewtopic.php?f=8&t=1550

It may be a good idea to provide additional crypto support to ECL programmers via a Std library module. Since the dev environment for OpenSSL is available while building the platform and Std modules, it makes sense to create that module at that time so ECL programmers don't have to install the OpenSSL headers to support embedded C++ functions.

The reason behind extending the crypto support primarily lies with end-use requirements. Data may need to be hashed or encrypted with a particular algorithm to support an external service, for instance.

Ideas for the new module: Additional hash functions, symmetric encryption/decryption, and asymmetric encryption/decryption. Not included would be any transport support (e.g. TLS).