Krzysztof Kurek authored Sep 23, 2019 and Dmitry Kazakov committed Sep 23, 2019

Bunch of misc commits that remove warnings about
deprecation in places where it doesn't affect code much.

https://invent.kde.org/kde/krita/merge_requests/150

Squashed commit of the following:

commit 104297616468769dbbf3efaf8f5bfe639eb1c2ab
Author: Krzysztof Kurek <krzysio.kurek@wp.pl>
Date:   Mon Sep 23 13:48:36 2019 +0000

    Remove a Qt5.13 function call

commit 232ac69942a6f737dee0f1a984c40b2297e10a30
Author: Krzysztof Kurek <krzysio.kurek@pm.me>
Date:   Sat Sep 21 17:14:36 2019 +0200

    Remove a CXX specific flag from other targets

commit 6b71a3cc9b734ca52ca5ff54af8248932cfd1144
Author: Krzysztof Kurek <krzysio.kurek@pm.me>
Date:   Sat Sep 21 17:12:34 2019 +0200

    Even more deprecation removal work

commit 9c4972ad9b65c87fde0125784adf1f616ff967c7
Author: Krzysztof Kurek <krzysio.kurek@pm.me>
Date:   Sat Sep 21 14:10:44 2019 +0200

    Revert some const-ref changes

    Also explicitly mark KisOptionInfo's copy-ctor as being present

commit f13ff926eb5f694a32154bd87159be9600e0df92
Author: Krzysztof Kurek <krzysio.kurek@pm.me>
Date:   Fri Sep 20 01:15:47 2019 +0200

    A bunch more deprecation fixes

    Hopefully it all works... I don't have a second screen to test it thorough.

commit 95c1ee1206f5fb7922833dacd848d97f57729d54
Author: Krzysztof Kurek <krzysio.kurek@pm.me>
Date:   Thu Sep 19 20:32:47 2019 +0200

    Get rid of a few implicit deprecation warnings

    Deleted some superfluous constructor definitions,
    explicitly declared operator= of SvgGraphicsContext as default but only for private usage.

commit 35d2f53086332a14406074df539e4fff3958e92e
Author: Krzysztof Kurek <krzysio.kurek@pm.me>
Date:   Thu Sep 19 20:30:35 2019 +0200

    Simplify KisSwatch class

    Removes a warning about implicit deprecation