Unused local variable
Fixed warnings and a doc typo.
SSL: Added support for some anonymous cipher suites.

Implements support for the ecdh_anon key exchange, and
adds cipher suites using dh_anon and ecdh_anon.
I guess this is what grubba intended.
Cleaned up HMAC code a bit.
Minor fixes to padding.
SSL: First go at supporting deflate compression.

This implements RFC 3749.