Perl: all known input headers are handled identically. As all known input headers are now linked lists, these are now handled identically. In particular, this makes it possible to access properly combined values of headers not specifically handled previously, such as "Via" or "Connection".

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


cat << END >> $NGX_AUTO_CONFIG_H

#ifndef $have
#define $have  1
#endif

END