libsigc++3-2.99.10-bp150.2.3

- Modernize spec-file by calling spec-cleaner

- Update to version 2.99.10:
  + slot_base::set_parent(): Create a dummy slot_rep if necessary
    (bgo#167714).
- Adopt the use of %make_build macro rather than raw make command,
  following the best practices.

- Update to version 2.99.9:
  + signal_impl::clear(): Don't clear the slot list during signal
    emission, to prevent a segfault. And add a test for this
    (bgo#784550).
  + Remove signal_base::erase() and signal_impl::erase()
    (bgo#784550).
  + Various minor code cleanups.
  + Windows: Update the MS Visual Studio build.
- Move AUTHORS, ChangeLog, NEWS, README to devel package, mainly
  developers would care for those files, silence a rpmlint warning.

- Update to version 2.99.8:
  + signal_impl:
  - Use std::weak_ptr<signal_impl> in connected slots, to avoid a
    memory leak (bgo#775871).
  - clear(): Really avoid erasing the slots prematurely.
  + slot_rep: Make destructor, destroy, and clone() virtual,
    instead of using function pointers that do the same thing
    (bgo#777618).
  + Build:
  - Visual Studio builds: Require Visual Studio 2017.
  - Add tests/memleakcheck.sh, to run the tests under valgrind
    (bgo#775871).
  + Make --disable-benchmark work (bgo#774732).
  + Make silent builds really silent (bgo#768797).

- RPM group reassignment

- Update to version 2.99.7:
  + connection, slot_base: Use an internal::weak_raw_ptr<> to
    simplify the code.
  + signal_base: Do not derive from trackable.
  + slot_rep: Pass a slot_rep*, not notifiable*, to destroy().
  + signal_impl: Do not derive from notifiable.

- Remove pointless --with-pic because shared libs are always
  built with it anyway

- Update to version 2.99.6:
  + signal:
  - Remove slots() and the container that it returns, and the
    iterator for that container.
  - connect(): Return a connection, instead of an iterator that
    can be implicitly converted to a connection.
  + Use std::shared_ptr<> for signal_impl reference-counting.
    Instead of manual reference-counting (bgo#764935).
  + slot: Use unique_ptr<> to avoid direct call of destructor
    (bgo#764935).
  + Add optional benchmark code, using boost::timer.
  + Make some single-item constructors explicit.
  + Make some member variables and methods private.
  + Remove _ and __ prefixes on variables and parameters.
  + Header guards: Remove leading underscores (and trailing
    underscores).
  + limit_derived_target<T_Target>: Rename to
    limit_trackable_target<> and visit_each_type<T_Type>() to
    visit_each_trackable() to make their purpose more obvious.

- Update to version 2.99.5:
  + Functors (mem_functor, ptr_functor) no longer need to derive
    from a common functor_base base class, and functors no longer
    need to have a result_type typedef or alias.
  + Emitters and accumulators no longer need to have a result_type
    typedef or alias.
  + Remove now-unnecessary adaptor_type type aliases.
  + Remove some more unused and unnecessary public type aliases.

- Update to version 2.99.4:
  + Minor documentation improvements.
  + Make some constructors explicit.
  + Some more minor uses of C++11 syntax.
  + Remove unused SIGC_FUNCTORS_DEDUCE_RESULT_TYPE_WITH_DECLTYPE.
  + Reformat code with clang-format.

- Update to version 2.99.3:
  + bgo#763616: Correct the license of some header files from GPL
    to LGPL.
- Change License to LGPL-3.0+ following upstreams changes.

- Update to version 2.99.2:
  + slots and signal: These should now be declared with the
    sigc::slot<R(Args...)> and sigc::signal<R(Args...)>
    syntax, like std::function<>. Version 2.9/2.10 of libsigc++-2.0
    supports both the old and new syntax.
  + sigc::men_fun(): Take the instance by reference only.

- Initial packaging of libsigc++3 based on libsigc++2.