Switch from deprecated <attr/xattr.h> to <sys/xattr.h>
The following bug as been reported in debian:
This package uses the deprecated <attr/xattr.h> header (from libattr) instead of the one provided now by glibc <sys/xattr.h>.
The former header has been removed in upstream libattr, but got reintroduced in Debian to avoid breakage just before the Debian buster freeze. But I'd like to be able to remove it in Debian too, so that the interface can be synced with upstream.
It looks like this is the only header used by this package from libattr, so you should be able to drop the dependency on libattr entirely, as glibc should be providing all that is needed now.