uwsgi: add modular package superseeding uwsgi-cgi

Provide the minimal applications and plugins for: cgi, filelog, syslog and
python3. More plugins can be added if needed by other packages. Autostart
uwsgi in emperor mode loading vassals on demand.

For now, include luci-support (maybe it will be moved to another package),
which uses the syslog plugin by default.

Signed-off-by: Peter Stadler <peter.stadler@student.uibk.ac.at>

net/uwsgi/patches/003-hard-code-Linux-as-compilation-os.patch

@@ -0,0 +1,15 @@
+--- a/uwsgiconfig.py
++++ b/uwsgiconfig.py
+@@ -5,9 +5,9 @@
+ import os
+ import re
+ import time
+-uwsgi_os = os.uname()[0]
+-uwsgi_os_k = re.split('[-+_]', os.uname()[2])[0]
+-uwsgi_os_v = os.uname()[3]
++uwsgi_os = "Linux"
++uwsgi_os_k = os.environ['LINUX_UNAME_VERSION']
++uwsgi_os_v = "Linux"
+ uwsgi_cpu = os.uname()[4]
+ 
+ import sys