Fix a couple small memleaks on bad config inputs

Found by the new version of Coverity.
warn about deprecated SPF RRs in 1.x
NEWS + version bump for 1.11.3
Merge branch 'master' into 2.x

Conflicts:
	gdnsd/ltree.c
	plugins/meta/libgdmaps/nets.c
	plugins/meta/meta_core.c
update NEWS for 2.0.0 so far