extra-cmake-modules.git, branch v5.84.0

Number screenshots in the same way the fastlane tool does this

2021-07-01T15:05:25+00:00

This considerably simplifies comparing our data with that retrieved from
Google Play for automatically syncing metadata.

Make pre-commit hook executable

2021-06-29T07:30:50+00:00

Otherwise recent versions of git will complain with:
```
hint: The '.git/hooks/pre-commit' hook was ignored because it's not set as executable.
hint: You can disable this warning with `git config advice.ignoredHook false`.
```

KDECompilerSettings: revert setting CMAKE_C(XX)_EXTENSIONS

2021-06-28T12:50:00+00:00

Some projects using KDECompilerSettings need more control about whether
this is set, as 3rd-party projects linked to might not meet those
requirements.

To be reworked and added later with consumer control options

[fastlane] Add mapping for serbian

2021-06-27T17:01:01+00:00

Qt maps it this way

cmake: Explicetely disable c/c++ compiler extensions

2021-06-26T22:52:00+00:00

We're a multi-compiler project, so disable compiler specific extensions

KDEFrameworkCompilerSettings: add warning note to only use for KF modules

2021-06-25T11:21:17+00:00

NO_CHANGELOG

Set the C++17 standard starting from 5.84

2021-06-19T16:07:40+00:00

Bump the C++ standard we compile with to 17

2021-06-19T11:46:25+00:00

But only for repos that require Frameworks 5.83 or newer.

We have asked on the KDE distributions mailing list and distro maintainers
didn't object to the change (since most distros already have recent enough
compilers).

Update IRC network name in the README

2021-06-15T22:06:42+00:00

KDE has moved from freenode to Libera Chat, update the README to reflect
this.

Override atime and ctime in tar PaxHeaders

2021-06-13T11:36:45+00:00

to make build results deterministic
See https://reproducible-builds.org/ for why this is good.

related to
https://phabricator.kde.org/D25494

Without this patch, openSUSE's kio package varied in
/usr/share/kdevappwizard/templates/ioslave.tar

This PR was done while working on reproducible builds for openSUSE.