On Debian-based distributions,  gcc FTBFS because of special  linker files and
architecture-dependent  headers being  available in  /usr/lib/<triplet> rather
than /usr/lib  and /usr/lib64. This avoids  settings respectively LIBRARY_PATH
and CPATH manually on such distributions.

http://kb.askmonty.org/en/mariadb-530-release-notes

zabbix_agentd is  a standalone  daemon which can  be ran  through supervisord,
whereas zabbix_agent is  supposed to be used with inetd,  thus use the former,
likewise zabbix-agent software instanciation profile.

Need to allow from www.owlfish.com, as WSGIUtils is available there.

Added white spaces arround "="

This value could be much higher in future because it is only sleep for so
long after instance be well setupped.