Entity tags: basic support in not modified filter. This includes handling of ETag headers (if present in a response) with basic support for If-Match, If-None-Match conditionals in not modified filter. Note that the "r->headers_out.last_modified_time == -1" check in the not modified filter is left as is intentionally. It's to prevent handling of If-* headers in case of proxy without cache (much like currently done with If-Modified-Since).

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


# aCC: HP ANSI C++ B3910B A.03.55.02

# C89 mode

CFLAGS="$CFLAGS -Ae"
CC_TEST_FLAGS="-Ae"

PCRE_OPT="$PCRE_OPT -Ae"
ZLIB_OPT="$ZLIB_OPT -Ae"
MD5_OPT="$MD5_OPT -Ae"