Does apr-1 no longer support OPTIONS-=IPV6?

[Roger Marquis]

Should apr (-1) no longer compile without usr/include/netinet6 despite 
being unset in make.conf?

# grep IPV6 /var/db/ports/devel_apr1/options
  _FILE_COMPLETE_OPTIONS_LIST= SSL NSS IPV6 DEVRANDOM BDB GDBM LDAP MYSQL NDBM PGSQL SQLITE FREETDS
  OPTIONS_FILE_UNSET+=IPV6
# make
  ...
  /usr/include/netinet/in.h:776:26: error: netinet6/in6.h: No such file or directory
  ...
  Stop in /usr/ports/devel/apr1.

Roger