Do a manual check for openssl if 'pkg-config openssl' fails.
Do a manual check for openssl if 'pkg-config openssl' fails.

This makes the node_crypto module available for node built using just a
default OS X dev environment (no darwinports or fink).

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node