Gbp-Dch: Ignore

Closes: #1060567

Gbp-Dch: Ignore

Update to upstream version '0.25'
with Debian dir 56d1927ade200ca51e7995b38334902de7812ba4

This has been inverted ever since GLib was replaced by commit
fbeb5358 - in GLib, more severe log
levels had smaller integer values.

Closes https://github.com/MusicPlayerDaemon/mpdscribble/issues/56

build(deps): bump actions/setup-python from 4 to 5

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4 to 5.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v4...v5

)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Fixes GCC warning on mingw.

It was surprising that Read() was non-blocking, but there was no
blocking version of it.  Let's make the non-blocking behavior explicit
and change Read() to be blocking.

In order to find existing callers easily with compiler errors, this
also refactors Read()/Write() to take a std::span parameter.

Only the file descriptor value itself is const, but the file itself
may be readable/writable.

This library has been initially developed at CM4all and eventually
published here:
 https://github.com/CM4all/libcommon/tree/master/src/event/

On this copy of it, there were only minor modifications by people
other than me, and these are below the copyright threshold; only
non-epoll backends (which remain under the GPL) were developed by
somebody else.