[debian-mysql] Bug#797004: mysql-server 5.5.44-0+deb8u1 not installable on fresh install of Stretch

[Randy]

Package: mysql-server-5.5
Version: 5.5.44-0+deb8u1
Severity: important

Dear Maintainer, 

   * What led up to the situation?
Trying to setup MythTV which requires mysql-server. Tried to install and it 
failed.  This machine is a fresh install of Stretch (testing).  If I remember 
right, been a week since, mariadb was removed so mysql could be installed

I have searched but not found this exact issue.  When the install is attempted 
it asks for a root password then fails.

from /var/log/mysql/error.log

150826 14:30:29 mysqld_safe Starting mysqld daemon with databases from 
/var/lib/mysql
150826 14:30:29 [Warning] Using unique option prefix key_buffer instead of 
key_buffer_size is deprecated and will be removed in a future release. Please 
use the full
name instead.
150826 14:30:29 [Note] /usr/sbin/mysqld (mysqld 5.5.44-0+deb8u1) starting as
process 30358
150826 14:30:29 [Warning] Using unique option prefix myisam-recover instead of 
myisam-recover-options is deprecated and will be removed in a future release. 
Please use
the full name instead.
150826 14:30:29 [Note] Plugin 'FEDERATED' is disabled.
/usr/sbin/mysqld: Table 'mysql.plugin' doesn't exist
150826 14:30:29 [ERROR] Can't open the mysql.plugin table. Please run 
mysql_upgrade to create it.
150826 14:30:29 InnoDB: The InnoDB memory heap is disabled
150826 14:30:29 InnoDB: Mutexes and rw_locks use GCC atomic builtins
150826 14:30:29 InnoDB: Compressed tables use zlib 1.2.8
150826 14:30:29 InnoDB: Using Linux native AIO
150826 14:30:29 InnoDB: Initializing buffer pool, size = 128.0M
150826 14:30:29 InnoDB: Completed initialization of buffer pool
150826 14:30:29 InnoDB: highest supported file format is Barracuda.
150826 14:30:29  InnoDB: Waiting for the background threads to start
150826 14:30:30 InnoDB: 5.5.44 started; log sequence number 1595675
150826 14:30:30 [ERROR] /usr/sbin/mysqld: unknown variable 'plugin-load-
add=unix_socket=auth_socket.so'
150826 14:30:30 [ERROR] Aborting

150826 14:30:30  InnoDB: Starting shutdown...
150826 14:30:31  InnoDB: Shutdown completed; log sequence number 1595675
150826 14:30:31 [Note] /usr/sbin/mysqld: Shutdown complete

150826 14:30:31 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid  
ended  


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.1.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages mysql-server-5.5 depends on:
ii  adduser      3.113+nmu3
ii  debconf [debconf-2.0]  1.5.57
ii  initscripts  2.88dsf-59.2
ii  libc6        2.19-19
ii  libdbi-perl  1.633-1
ii  libgcc1      1:5.1.1-14
ii  libstdc++6   5.1.1-14
ii  lsb-base     4.1+Debian14
ii  mysql-client-5.5       5.5.44-0+deb8u1
ii  mysql-common 5.5.44-0+deb8u1
ii  mysql-server-core-5.5  5.5.44-0+deb8u1
ii  passwd       1:4.2-3
ii  perl         5.20.2-6
ii  psmisc       22.21-2
ii  zlib1g       1:1.2.8.dfsg-2+b1

Versions of packages mysql-server-5.5 recommends:
ii  libhtml-template-perl  2.95-2

Versions of packages mysql-server-5.5 suggests:
ii  heirloom-mailx [mailx]  12.5-5
pn  tinyca                  <none>

-- debconf information:
  mysql-server/no_upgrade_when_using_ndb:
  mysql-server-5.5/postrm_remove_databases: false
* mysql-server/password_mismatch:
* mysql-server/error_setting_password:
  mysql-server-5.5/start_on_boot: true
  mysql-server-5.5/really_downgrade: false
  mysql-server-5.5/nis_warning:
-- 
If it ain't broke tweek it