Log message:
Upgrade to 0.7.6. Closes PR#17158.

(Also disable compface for now. Maintainer will be submitting a version
 that uses compface in the next few weeks.)

Changes since version 0.7.5 (from NEWS file):

* The manual and the FAQ have been updated, and German and Italian FAQs
  have been added.
* IMAP shared folder is now supported.
* 'Create filter rule' has been added to the context menu.
* Only newsgroup names longer than specified length are abbreviated.
* 'Get all' doesn't check for new messages on IMAP or News account by
  default.
* Minor improvements to the folder property dialog have been made.
* Special characters like parentheses can be used in passwords for IMAP
  accounts now.
* Some crash bugs and other minor bugs have been fixed.

Log message:
only enable ipv6 if USE_INET6 is defined.
this package now conflicts with sylpheed-claws.

Log message:
Updated to 0.7.5.

Changes from NEWS are

    * The license has been modified so that it will be compatible with
      OpenSSL.
    * Sent / Drafts / Queue folder on IMAP4 has been enabled.
    * The internationalization of IMAP4 folder name has been implemented.
    * IMAP4 folder renaming has been implemented.
    * Some critical bugs in IMAP4 response parser have been fixed.
    * Non-default mailboxes are now specifiable for inbox, sent, draft,
      trash folder and the destination of filtering, using folder identifier.
    * Folder property dalog has been implemented.
    * Special folders can be specified from the folder property dialog.
    * 'Outbox' has been changed to 'Sent'.
    * Queued messages are now saved to Sent folder after they are actually
      sent.
    * The auto line-wrapping has been improved.
    * 'Reply to sender' now works for newsgroups.
    * The SMTP server response is now referred on SMTP AUTH.
    * Templates can be inserted into the current cursor position now.
    * Confirmation dialog is displayed on sending if sbject is empty.
    * Displayed newsgroup names are now abbreviated.
    * The timeout of DNS lookup has been implemented.
    * 'Ctrl-Enter' shortcut now works even if Num Lock is on.
    * The new application icon has been added.
    * New message checking on IMAP or news server will be aborted immediately
      if some errors occurred.
    * Some menu items have been modified.
    * Some other bugfixes have been made.