The other patches are just my selection of fixes that were deemed low risk to me.
We expect the next official syslog-ng release to be 3.14 at the end of February, and I've felt this set of fixes would be useful even in the meantime.
At this point, I take this as an experiment: if publishing fixes this way "works" (e.g. fixes get published in the OS packages that we don't maintain ourselves), then we can get some form of maintenance to older open source releases as time permits, with collaboration from our fellow OS maintainers. Also, power users, who are able to compile source code for themselves get help too.
Let me know if this is useful.