configure: fixed rosedb build when enabled
dnsproxy: fixed leak
rosedb: fixed broken NXDOMAIN by the changes in the rcode processing
doc: updated rosedb doc for free/authoritative responses, reasoning
dnsproxy: fixed request leak if failed to enqueue
rosedb: cleanup
dnsproxy: added checks for overlay add failure
rosedb_tool: memleak on the exit
sockaddr: check parameters, updated doc
rosedb: cleanup