xorg-server-21.1.21-1

[Jon Turney]

The following packages have been uploaded to the Cygwin distribution:

* xorg-server-21.1.21-1
* xorg-server-common-21.1.21-1
* xorg-server-debuginfo-21.1.21-1
* xorg-server-devel-21.1.21-1
* xorg-server-extra-21.1.21-1
* xorg-server-xorg-21.1.21-1
* xwinclip-21.1.21-1

These packages contain XWin and the other X.Org X11 servers.

In addition to upstream fixes [1]-[6], the following cygwin-specific 
changes have been made since since 21.1.15-1:

* Modernize ImageMagick use for svg -> icon conversion

[1] https://lists.x.org/archives/xorg-announce/2025-February/003585.html
[2] https://lists.x.org/archives/xorg-announce/2025-June/003609.html
[3] https://lists.x.org/archives/xorg-announce/2025-June/003612.html
[4] https://lists.x.org/archives/xorg-announce/2025-October/003636.html
[5] https://lists.x.org/archives/xorg-announce/2025-October/003638.html
[6] https://lists.x.org/archives/xorg-announce/2025-November/003643.html