[dovecot/core] 134b50: lib: add tests for HMAC-SHA256 from RFC 4231

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 134b5022c0549daef243e2c3220bd0238f396868
      https://github.com/dovecot/core/commit/134b5022c0549daef243e2c3220bd0238f396868
  Author: Martti Rannanjärvi <martti.rannanjarvi at dovecot.fi>
  Date:   2016-11-29 (Tue, 29 Nov 2016)

  Changed paths:
    M src/lib/Makefile.am
    A src/lib/test-hmac.c
    M src/lib/test-lib.inc

  Log Message:
  -----------
  lib: add tests for HMAC-SHA256 from RFC 4231