shutil: Ignore EPERM/ENOTSUP errors while copying xattrs by default
shutil: Ignore EPERM/ENOTSUP errors while copying xattrs by default

Unprivileged users won't be able to copy e.g. security.selinux; let's
ignore this by default, the same way coreutils does.

Distrotech/libgsystem,Distrotech/libgsystem,GNOME/libgsystem,GNOME/libgsystem