[libsigcplusplus] Created tag 2.99.8

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '2.99.8' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Tue Feb 14 08:19:17 2017 +0100

    2.99.8

Changes since the last tag '2.99.7':

Christophe Lermytte (1):
      Make --disable-benchmark work

Chun-wei Fan (2):
      Visual Studio builds: Use Visual Studio 2017.
      Visual Studio builds: Rename MSVC_Net2013 to MSVC_Net2017

Kjell Ahlstedt (7):
      Build: Fix silent builds
      signal_impl::clear(): Really avoid erasing the slots prematurely
      signal_impl: Use std::weak_ptr<signal_impl> in connected slots
      Add tests/memleakcheck.sh
      slot_rep: Make destructor, destroy() and dup() virtual
      slot_rep: Rename dup() to clone()
      slot_rep: Fix the notify_slot_rep_invalidated() name in comments

Murray Cumming (4):
      Correct a comment.
      slot_rep::dup(): Remove an unnecessary static_cast.
      tests: Catch exceptions by const ref.
      2.99.8