Upgrade version to 1.8.6

[Ryan Duryea]

1) Ubuntu release: Yakkety Yak
2) v1.6.2-0ubuntu3
3) Expected more recent version of synergy, e.g. v1.8.x
4) Got an outdated version of v1.6.2 which doesn't support SSL connections

I asked about upgrading the version of Synergy and was told to create a bug:
https://answers.launchpad.net/ubuntu/+source/synergy/+question/441860/+confirm?answer_id=0

The package for synergy is currently 1.6.2, but the current version of synergy is 1.8.6. Synergy 1.7 introduced SSL connections between client and server, greatly enhancing the security of Synergy. Users running v1.7+ on their other OSes must turn off SSL in order to work with version 1.6.2.

The introduction of SSL introduced in v1.7 a lot of problems that have been addressed in v1.8.

Here are the most relevant Bug/Security/Enhancements between v1.6.2 and v1.8.6-stable.
=============
Bug #5680 - Server crashes when disconnecting SSL clients
Bug #4740 - Linux client crashes with "Assertion '!m_open' failed"
Bug #4879 - Memory leak caused by IpcReader
Bug #5502 - Copy and paste from server to client doesn't work
Bug #5087 - Linux client fails to start due to invalid cursor size
Bug #4735 - Clipboard doesn't work from client to server
Bug #4353 - Large clipboard causes crash
Bug #4565 - Incorrect plugin downloads on Debian and Mint
Enhancement #4313 - SSL encrypted secure connection

[Timo Jyrinki (timo-jyrinki)]

This bug was fixed in the package synergy - 1.8.7-stable+dfsg.1-1

---------------
synergy (1.8.7-stable+dfsg.1-1) experimental; urgency=medium

  * New maintainer (Closes: #852081)
  * New upstream version. (Closes: #764390, #818490)
  * Update watchfile to check symless github.
  * Upstream tarball modified to remove non-DFSG files and unused external
    library tarballs.
  * Removed patches: cprotocolutil-writef, system-cryptopp, x11-mouseover.
  * Added shell script to generate SSL key/certificate files for encryption
    (/usr/share/synergy/gen_ssl_pem.sh).
  * Updated man pages (removed old crypto++ references and command line
    options, added new command line options, formatting).
  * Added documentation to README.Debian on enabling crypto without the gui.
  * Added new_ssl patch to build against newer OpenSSL in Debian.
  * Added enable_pro patch to bypass activation for Pro features.
  * Added syntool binary and manual page.
  * lintian override for possible-gpl-code-linked-with-openssl due to
    upstream exception.
  * Added a debian specific version string to the GUI about dialog.

 -- Joshua Honeycutt <email address hidden> Mon, 06 Feb 2017 09:25:39 -0600

[Timo Jyrinki (timo-jyrinki)]

Correction, the package is stuck in proposed currently because it fails two tests on powerpc and s390x.

[Hans Joachim Desserud (hjd)]

Might have been fixed by an earlier version, but synergy 1.8.7-stable+dfsg.1-2 built successfully on all architectures and is available on Ubuntu 17.04