SoftHSM 2.4.0

Version 2.4.0 of SoftHSM has been released. Updates: Issue #135: Support PKCS#8 for GOST. Issue #140: Support for CKA_ALLOWED_MECHANISMS. (Patch from Brad Hess) Issue #141: Support CKA_ALWAYS_AUTHENTICATE for private key objects. Issue #220: Support for…