toolchain/53880: nameser_compat.h contains an old, outdated endian.h

[coypu%sdf.org@localhost]

>Number:         53880
>Category:       toolchain
>Synopsis:       nameser_compat.h contains an old, outdated endian.h
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    toolchain-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 16 04:15:00 +0000 2019
>Originator:     coypu
>Release:        NetBSD 8.99.25
>Organization:
>Environment:
NetBSD 8.99.25 powerpc (not mine)
>Description:
This showed up as a spurious error in a package that included nameser_compat.h first, before anything else

ftp://malus.urc.uninett.no/reports/2018Q3/20181111.1138/loudmouth-1.5.3/build.log

In file included from lm-resolver.c:25:0:
/usr/include/arpa/nameser_compat.h:85:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before string constant
   error "Undefined or invalid BYTE_ORDER";
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


alternative idea, replace block by another header providing _BYTE_ORDER.
Most minimal one is <machine/endian_machdep.h> but <endian.h> should be standard now.
>How-To-Repeat:

>Fix: