New package uwsgi-php

uwsgi-php plugin is missing from the alpine packages.

building it requires patching plugins/php/uwsgiplugin.py as shown here
https://gist.github.com/gdamjan/bef17c8654f258485037945e2b5994ce

the makedependencies and _plugins in uwsgi APKBUILD needs to be updated as well.

(from redmine: issue id 6602, created on 2016-12-29)

• Relations:
  • duplicates #7061 (closed)
• Changesets:
  • Revision 355691c6 on 2017-12-15T13:03:05Z:

main/uwsgi: add php plugin support

Fixes #6602 #7061

There are 2 package requests open and i thould i could fullfill them:
https://bugs.alpinelinux.org/issues/6602
https://bugs.alpinelinux.org/issues/7061
The changes extend the uwsgi with two new packages:
* uwsgi-php5
* uwsgi-php7