Included in upstream

Remove the part with PKG_RELEASE bump, so I dont need to rebase it
every time, when I bump syslog-ng in upstream

We provide now our own version of luajit package with moonjit. We can
later think about upstreaming it.

My patch, which was present in the hack folder, is no longer applying as
mariadb was updated in OpenWrt 18.06, 19.07 and master branches.
This patch was meant to be a workaround as something in OpenWrt was
changed and it caused inconsistency in the installation of packages and we
would like to have provided mariadb in our feed, this was the easiest
and a quicker solution at that time.

Solution is provided in this commit: a42ef21a740653ee76146bfccee1ab6afbd65539

It compiles with moonjit as we switched to it

Geoip2 is disabled so this dependency is not used.