Security update for libgcrypt (moderate)

This update for libgcrypt fixes the following issues:

The following security vulnerability was addressed:

• CVE-2018-0495: Mitigate a novel side-channel attack by enabling blinding
  for ECDSA signatures (bsc#1097410).

The following other issues were fixed:

• Extended the fipsdrv dsa-sign and dsa-verify commands with the
  –algo parameter for the FIPS testing of DSA SigVer and SigGen
  (bsc#1064455).
• Ensure libgcrypt20-hmac and libgcrypt20 are installed in the correct
  order. (bsc#1090766)

This update was imported from the SUSE:SLE-12:Update update project.