libarchive update SVN r299529 breaks "ezjail update"

[Ngie Cooper (yaneurabeya)]

> On May 14, 2016, at 16:29, Martin Matuska <mm at FreeBSD.org> wrote:
> 
> Ian, we are here talking about cpio, not libarchive. The flag in
> libarchive is not active by default.
> 
> On 14.05.2016 22:08, Ian Lepore wrote:

>> The real damage will happen to out-of-tree users.  I think this will
>> impact our software updater for $work for example, and it has to work
>> with both old and new versions of libarchive, and now the new version
>> will require a flag that the old version will reject as unknown.
>> 
>> Ick.

Ian’s comment was valid.. cpio doesn’t recognize the new switch on older versions, so something like cpio `cpio --help | grep -- switch && echo switch` would need to be employed everywhere for backwards compatibility — ew.
Thanks,
-Ngie