Replace the direct use of MD5 with the EVP API's SHA1 representation of 
the host:port combination for the SSL session key context of each listener.

This restores FIPS functionality when combined with OpenSSL 1.0.1c which has
dropped support for direct hash functions when operating under FIPS mode.
This also anticipates some users dropping MD5 altogether from their OpenSSL.

Also eliminates the unused MD5 accessor function SSL_vhost_algo_id().





git-svn-id: https://svn.apache.org/repos/asf/tomcat/native/trunk@1438342 13f79535-47bb-0310-9956-ffa450edef68