Adding more PublicKey Signature testing

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/branches/1.5.x-fixes@1597058 13f79535-47bb-0310-9956-ffa450edef68
Updating BouncyCastle + fixing build

git-svn-id: https://svn.apache.org/repos/asf/santuario/xml-security-java/branches/1.5.x-fixes@1597060 13f79535-47bb-0310-9956-ffa450edef68