[ITP] libxcvt

[Jon Turney]

libxcvt is a new dependency of the forthcoming X server 21.

libxcvt is a library providing a standalone version of the X server
implementation of the VESA CVT standard timing modelines generator.

It is packaged for Fedora etc. (see [1])

cygport file:

https://github.com/jon-turney/libxcvt-cygport/blob/master/libxcvt.cygport

CI:

https://cygwin.com/cgi-bin2/jobs.cgi?id=3463

license:

MIT

[1] https://repology.org/project/libxcvt/versions