add authtag HS80 support

[juha-h]

This patch adds authtag HS80 support to the lib.

*** /tmp/zrtp.c 2017-04-27 22:16:39.478109117 +0300
--- libzrtp/src/zrtp.c 2017-04-27 22:07:02.999066420 +0300

---

*** 810,815 ****
--- 810,816 ----
profile->cipher_types[0] = ZRTP_CIPHER_AES256;
profile->cipher_types[1] = ZRTP_CIPHER_AES128;
profile->auth_tag_lens[0] = ZRTP_ATL_HS32;

• profile->auth_tag_lens[1] = ZRTP_ATL_HS80;
  profile->hash_schemes[0] = ZRTP_HASH_SHA256;

  if (zrtp && (ZRTP_LICENSE_MODE_PASSIVE == zrtp->lic_mode)) {

---

*** 865,871 ****
ZRTP_LOG(1, (ZTU,"WARNING! can't find '32 ' in profile.\n"));
return zrtp_status_fail;
}
!
/*
* Check that each component in the profile is in the global set of components.
/
--- 866,877 ----
ZRTP_LOG(1, (ZTU,"WARNING! can't find '32 ' in profile.\n"));
return zrtp_status_fail;
}
!
! if (0 > zrtp_profile_find(profile, ZRTP_CC_ATL, ZRTP_ATL_HS80)) {
! ZRTP_LOG(1, (ZTU,"WARNING! can't find '80 ' in profile.\n"));
! return zrtp_status_fail;
! }
!
/
* Check that each component in the profile is in the global set of components.
*/

[juha-h]

Will create proper pull request.