mod_proxy_uwsgi: Add in UWSGI proxy (sub)module
trunk patch: http://svn.apache.org/r1810358
http://svn.apache.org/r1810362
http://svn.apache.org/r1810363
http://svn.apache.org/r1810365
http://svn.apache.org/r1810447
http://svn.apache.org/r1816919
http://svn.apache.org/r1816922
http://svn.apache.org/r1818013
http://svn.apache.org/r1818280
+1: jim, icing, minfrin
icing: tested on ubuntu 16.04 with a simple uwsgi python app.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@
1824184 13f79535-47bb-0310-9956-
ffa450edef68