Log Message:
msmtp: Update to 1.8.10

Changes:
1.8.10
------
- The msmtpq script was fixed (it was accidently broken in 1.8.8)
  [that was partially fixed in 1.8.9, that was omitted in the release notes]
- Updated translations.
- New serbian translation is included.

1.8.8
-----
- Added a new socket command and --socket option to connect via local sockets.
- Added a new tls_host_override command and --tls-host-override option to
  override the host name used for TLS verification.
- Added a new set_from_header command and --set-from-header option with three
  settings:
  - on: always set a From header, possibly replacing an existing one
  - off: never set a From header
  - auto: add a From header if there is none (this is the default).
  This replaces the add_missing_from_header option (which remains supported).
- Added a new set_date_header command and --set-date-header option with two
  settings:
  - off: never set a Date header
  - auto: add a Date header if there is none (this is the default).
  This replaces the add_missing_date_header option (which remains supported).
- Fixed the handling of empty From headers with --read-recipients/-t.
- Fixed the source_ip command for proxies.