libafsauthent includes auth/cellconfig.c, which uses res_search, so it
requires -lresolv even if it isn't needed for gethostbyname. Add
LIB_AFSDB to the link line for libafsauthent.
Change-Id: Id83ceb8b261b8c7fb176e24cc138276282608513
Reviewed-on: http://gerrit.openafs.org/2408
Reviewed-by: Russ Allbery <rra@stanford.edu>
Tested-by: Russ Allbery <rra@stanford.edu>