Fixed build with signed socklen_t and unix sockets. This seems to be the case at least under Cygwin, where build was broken by 05ba5bce31e0 (1.5.3). Reported by Kevin Worthington, http://mailman.nginx.org/pipermail/nginx/2013-August/040028.html.

# 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"