Backport to v2022: Disable support of XAR

libarchive is used on the Apertis rootfs, but the XAR support requires to depend on libxml2 which depends on the huge libicu67. As XAR is quite rare disable support for it, minimizing rootfs size.

Signed-off-by: Detlev Casanova detlev.casanova@collabora.com Signed-off-by: Dylan Aïssi dylan.aissi@collabora.com