Merge "<arpa/nameser.h>: rationalize __INTRODUCED_IN." am: e405c90f19

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2626138

Change-Id: Iabe705fb4061ab87b0b461d8741d32bc668a5c4e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>