simplify client_get_clip

the clips for xwayland and xdg clients are pretty similar, after all we only
need to adjust x and y for xdg clients

prevent a use-after-free at exit

do not compute layout box twice

make sure fullscreen clients have the right size

fix screen artifacts when setting gamma

the artifacts were caused because we tried to set the gamma right after
receiving the event, this resulted in two pending page-flips, which
not always play well together.

This also seems to fix a screen freeze when turning on a monitor that has
gamma.

Additionally the current method won't work once [0] is merged

[0]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4423

use wlr_scene_subsurface_tree_set_clip

References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4131
Closes: https://github.com/djpohly/dwl/issues/411

Revert "respect size hints"

This reverts commit 72e0a560d9836c5e8658003f548203bcd722e565.

use newer cursor naming spec

References: https://www.freedesktop.org/wiki/Specifications/cursor-spec/
References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4416

ignore maximize events for clients using xdg-shell v5 and newer

send maximized if tiled isn't supported (XDG shell)

wlroots doesn't do it automatically anymore

References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4409

Merge remote-tracking branch 'upstream/main' into wlroots-next

clarify the dependencies needed by dwl

Note that previous df131cdb78c6e3e79c3fafa522f0e4f6b43d2ab4 libX11 headers
were also required for building (but not for runtime)

Also, I want to apologize to the packagers for do not list *all* the required
dependencies before.

update README.md

these things were changed in the code but not in the readme

check client is mapped before setting border color

For some reason brave configured for as a wayland client triggers this code on startup and segfaults.

Checking if the client is mapped fixes this, like with the previous fix for urgent border colour.

References: 887fde65a3010905aa10f373cfcfe540cfc1781e
Fixes: 72a7d78a1a7926a207539eb50f44b2e1eb089d49

Merge remote-tracking branch 'upstream/main' into wlroots-next

use <xcb/xcb.h> instead of <X11/Xlib.h>

only set border color for urgent *and* mapped X11 clients

this fixes a segfault when the client emits .set_hints but it's not mapped

Fixes: 72a7d78a1a7926a207539eb50f44b2e1eb089d49

Merge remote-tracking branch 'upstream/main' into wlroots-next

Revert "just add define"

I'm going to make some changes in the config file anyway

This reverts commit e5367753bb90add013ee5d170a110064298ac2c4.

add [-d] flag to enable debug logging