[libvirt] Release of libvirt-php-0.5.2

[Michal Privoznik]

After 5 months of development I'm more than proud to announce that
libvirt-php-0.5.2 is out!It can be downloaded from

  http://libvirt.org/sources/php/libvirt-php-0.5.2.tar.gz

This release focused on adapting to PHP7 and yet again some more bug
fixes. The diff stat is rather big, but that's mostly because of all the
documentation that has been added to PHP functions that we expose. I'd
like to thank everybody who participated, namely Neal and Remi for
proposing their patches and testing mine, Vasiliy for his valuable
input. Lets make the next release even better!

Michal