qt5-webengine: Track 5.15 branch
Since we roll our own distfile, this will make it easier to stay caught
up with backported Chromium security patches. Currently, it is patched
up to Chromium version 119.0.6045.123.
Fix build with newer devel/re2 and unbundle. Add a few patches that
reduce warnings that significantly increase build log size, some coming
as a result of having to build with c++17 now.
Add patches from Arch Linux [1] to finally remove dependency on the
long-expired Python 2.7. Special thanks to kai@ for reworking theses
patches for FreeBSD and testing them.
Obtained from: https://gitlab.archlinux.org/archlinux/packaging/packages/qt5-webengine/ [1]
MFH: 2023Q4
Security: 6e4e8e87-9fb8-4e32-9f8e-9b4303f4bfd5
Security: 88754d55-521a-11ee-8290-a8a1599412c6
Security: 5666688f-803b-4cf0-9cb1-08c088f2225a
Security: df0a2fd1-4c92-11ee-8290-a8a1599412c6
(cherry picked from commit d53807cc0e309a0f9dc9be2931e9681281184403)