Sub filter: fixed matching after a partial match. After a failed partial match we now check if there is another partial match in previously matched substring to fix cases like "aab" in "aaab". The ctx->saved string is now always sent if it's present on return from the ngx_http_sub_parse() function (and reset accordingly). This allows to release parts of previously matched data.

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


    cat << END                                            >> $NGX_MAKEFILE

$NGX_LIBATOMIC/src/libatomic_ops.a:	$NGX_LIBATOMIC/Makefile
	cd $NGX_LIBATOMIC && \$(MAKE)

$NGX_LIBATOMIC/Makefile:	$NGX_MAKEFILE
	cd $NGX_LIBATOMIC && ./configure

END