ciphersuite string such as "DEFAULT:RSA" cannot enable
authentication-only ciphersuites.

Submitted by: Victor Duchovni

- add a workaround provided by Victor Duchovni so that 128- and
  256-bit variants of otherwise identical ciphersuites are treated
  correctly;

- also, correctly skip invalid parts of ciphersuite description strings.

Submitted by: Victor Duchovni, Bodo Moeller

PR: 1466

versions of DSA signature functions.

crypto without ASN1 dependency.

remove redundant source file hash checks.

PR: 1403