[SANTUARIO-388] - Add support + testing for RIPE-MD160 digest algorithm

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/trunk@1596190 13f79535-47bb-0310-9956-ffa450edef68
Optimisation to avoid needlessly creating a MessageDigest algorithm where it isn't required

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/trunk@1596194 13f79535-47bb-0310-9956-ffa450edef68
[SANTUARIO-389] - Add support + testing for SHA-224 digest algorithm

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/trunk@1596196 13f79535-47bb-0310-9956-ffa450edef68