Log Message:
claws-mail: Update to 3.17.8

* 3.17.8
--------

* Shielded template's |program{} and |attach_program{} so that the
  command-line that is executed does not allow sequencing such as
  with && || ;, preventing possible execution of nasty, or at least
  unexpected, commands

* fixed bug 4376, 'Litehtml breaks locale'

* updated English, French, and Spanish manuals

* 3.17.7
--------

* Image Viewer: Image attachments, when displayed, are now resized
  to fit the available width rather than the available height.

* -d is now an alias to --debug.

* Libravatar plugin: New styles supported: Robohash and Pagan.

* SpamAssassin plugin: The 'Maximum size' option now matches
  SpamAssassin's maximum; it can now handle messages up to 256MB.

* LiteHTML viewer plugin: The UI is now translatable.

* The manual has been updated.

* The man page has been updated.

* Updated translations: French, Spanish.

* bug fixes:
	o bug 4313, 'Recursion stack overflow with rebuilding folder
		     tree'
	o bug 4372, '[pl_PL] Crash after "Send later" without
		     recipient and then "Close"'
	o bug 4373, 'attach mailto URI double free'
	o bug 4374, 'insert mailto URI misses checks'
	o bug 4384, 'U+00AD (soft hyphen) changed to space in
		     Subject'
	o bug 4386, 'Allow Sieve config without userid without
		     warning'
	o Add missing SSL settings when cloning accounts.
	o Parsing of command-line arguments.
	o PGP Core plugin: fix segv in address completion with a
	  keyring.
	o Libravatar plugin: fixes to image display.

* 3.17.6
--------

* It is now possible to 'Inherit Folder properties and processing
  rules from parent folder' when creating new folders with the
  move message and copy message dialogues.

* A Phishing warning is now shown when copying a phishing URL, (in
  addition to clicking a phishing URL).

* The progress window when importing an mbox file is now more
  responsive.

* A warning dialogue is shown if the selected privacy system is
  'None' and automatic signing amd/or encrypting is enabled.

* Python plugin: pkgconfig is now used to check for python2. This
  enables the Python plugin (which uses python2) to be built on
  newer systems which have both python2 and python3.

* Add translation: Greek.

* Updated translation: Polish.

* bug fixes:
	o bug 3922, 'minimize to tray on startup not working'
	o bug 4220, 'generates files in cache without content'
	o bug 4325, 'Following redirects when retrieving image'
	o bug 4342, 'Import mbox file command doesn't work twice on a
	  	     row'
	o fix STARTTLS protocol violation
	o fix initial debug line
	o fix fat-fingered crash when v (hiding msgview) is pressed
	  just before c (check signature)
	o fix non-translation of some Templates strings