QFile::moveToTrash: use $XDG_DATA_HOME/Trash as the trash directory

The code assumed that files in $HOME should be moved into $HOME/.Trash,
which is not what the spec says. The "home trash" is defined to be
$XDG_DATA_HOME/Trash, and we can expect $XDG_DATA_HOME to exist. If it
doesn't, then we can safely fail, as the environment is not compliant
with the Desktop Base Directory Specification [1] anyway.

[1] http://www.freedesktop.org/Standards/basedir-spec

This will make the tests fail on such non-compliant environments, such
as server versions of the distribution. That's acceptable.

[ChangeLog][QtCore][QFile] moveToTrash now creates the trash folder on
Linux as $XDG_DATA_HOME/Trash, as required by the freedesktop.org spec.

Change-Id: I7ef73c0c268ef5ea4df141bb7831b93a65ad213a
Fixes: QTBUG-83933
Pick-to: 5.15
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: David Faure <david.faure@kdab.com>

0 files changed, 0 insertions, 0 deletions