[dovecot/core] a7a0f3: apparmor: Add apparmor plugin

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: a7a0f3196b2b97577ebd9e804507d58e67508fcf
      https://github.com/dovecot/core/commit/a7a0f3196b2b97577ebd9e804507d58e67508fcf
  Author: Aki Tuomi <aki.tuomi at dovecot.fi>
  Date:   2017-08-17 (Thu, 17 Aug 2017)

  Changed paths:
    M configure.ac
    A m4/want_apparmor.m4
    M src/plugins/Makefile.am
    A src/plugins/apparmor/Makefile.am
    A src/plugins/apparmor/apparmor-plugin.c

  Log Message:
  -----------
  apparmor: Add apparmor plugin

It lets dovecot temporarily switch to a new apparmor
context for a user.


  Commit: 9599d7ecbc84e9d33295e1e9a9be937faddce68a
      https://github.com/dovecot/core/commit/9599d7ecbc84e9d33295e1e9a9be937faddce68a
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2017-08-17 (Thu, 17 Aug 2017)

  Changed paths:
    M src/plugins/virtual/virtual-storage.h
    M src/plugins/virtual/virtual-sync.c

  Log Message:
  -----------
  virtual: Make sure sync_mailbox_idx isn't used uninitialized

Changing its indexes to start from 1, we can add an assert to check that
it's never the default 0 when we need to use it.


Compare: https://github.com/dovecot/core/compare/8017d6c67481...9599d7ecbc84