This update fixes the following issues with claws-mail:
- Update to version 3.9.2 (bnc#816881).
+ New big icon for compose windows.
+ Never decode multipart/ or message/ parts, as RFC states.
+ Add missing check for libperl.
+ Fix check for libsoup - it is not obligatory.
+ Do not try to destroy a NULL session after an unsuccesful NNTP connect attempt.
+ The extraheaderrc format doesn't allow data after the header colon. Other OSes may insert extra characters other than \n, so, remove them all.
+ Fix undoing file insertion.
+ Fix check for python.
+ Fix detection of account in --compose and --compose-from-file where the From value contains a name + email.
+ Bugs fixed: claws#2923, claws#2927.

- Update to version 3.9.1:
+ All plugins previously packaged as 'Extra Plugins' are now contained within the Claws Mail package. In addition to that, the following plugins have been dropped: TrayIcon, Dillo Viewer, and Gtkhtml2 Viewer.
+ 3 command-line switches have been added:
* --cancel-receiving which cancels the currently running message retrieval operation.
* --cancel-sending which cancels the currently running message sending operation.
* --debug which toggles debug output.
+ '/Message/Cancel sending' has been added to the main menu.
+ In the filtering and processing condition configuration for Age, it is now possible to match based on number of hours.
+ The GnuPG signature timestamp is now displayed in the full signature information.
+ Support for GnuTLS priority string has been added.
+ Keep-alive pings are now performed on IMAP and NNTP connections.
+ In the Compose window, the focus is now moved to the message body when focus is in the Subject entry and the Enter key is pressed.
+ The Delete key can now be used to remove Colour Label hotkeys.
+ PDF Viewer: The printed PDF quality has been improved.
+ Fancy HTML viewer: The options dialogue has been completely reworked, and disabling remote content is now totally strict.
+ Python plugin: Added Cc field to messageinfo objects.
+ Python plugin: Added examples.
+ Python plugin: Added a function to get an arbitrary header from a MessageInfo object.
+ Perl plugin: The documentation for insert_perl.pl has been improved.
+ Basic handling of vcard 3.0 has been added to vcard2xml.py.
+ The man page has been updated.
+ Bugs fixed: claws#1137, claws#1684, claws#1963, claws#2340, claws#2617, claws#2624, claws#2702, claws#2774, claws#2785, claws#2801, claws#2826, claws#2828, claws#2832, claws#2835, claws#2859, claws#2862, claws#2863, claws#2878, claws#2879, claws#2882, claws#2885, claws#2890, claws#2893, claws#2903, claws#2909.
+ Updated translations.

- Fix brp check failure due to some missing include headers.
- Explicitly pass all --enable-*-plugins to configure, to ensure we will not lose any at any time.
- Drop --enable-openssl configure parameter: no longer supported.
- Fix crash with unknown encodings (bnc#816881)