XML Output: libxo - provide single API to output TXT, XML, JSON and HTML

[Garrett Cooper]

> On Dec 24, 2014, at 18:19, Alfred Perlstein <alfred at freebsd.org> wrote:
> 
> A revision has been created to track this: https://reviews.freebsd.org/D1370

Hi Alfred,
    Please add the entry to ObsoleteFiles.inc. once that's done, please commit the change.
Thanks :)!!