[libsigcplusplus] Created tag 2.99.9

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '2.99.9' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Mon Aug 7 12:42:40 2017 +0200

    2.99.9

Changes since the last tag '2.99.8':

Chun-wei Fan (3):
      Visual Studio builds: Rename libsigc++2 projects to libsigc++3
      Visual Studio builds: Update "install"
      MSVC_Net2017/filelist.am: Fix listing

Kjell Ahlstedt (4):
      signal_impl::clear(): Don't clear the slot list during signal emission
      test_signal: Test calls to signal_base::clear()
      Remove signal_base::erase() and signal_impl::erase()
      Update method names in comments

Murray Cumming (16):
      tests: Remove unnecessary includes.
      tests: Implement a function.
      tests: Include cstring instead of string.h
      tests: Make some casts explicit.
      tests: Some use of auto.
      tests: Initialize a member variable.
      track_obj_functor: Make the constructor explicit.
      trackable: Don't bother checking for null before using delete.
      weak_raw_ptr: Minor use of auto
      trackable: Make move operations noexcept.
      signal.h: Correct some strange comment formatting.
      slot_base: Destructor: No need for null check before delete.
      trackable: Use emplace_back() instead of push_back().
      signal_impl_exec_holder: Make a constructor explicit.
      Tests: Add comments by uses after move.
      2.99.9