We wish to acknowledge the following copyrighted works that make up portions of the Apache software: Portions of this software were developed at the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana-Champaign. This software contains code derived from the RSA Data Security Inc. MD5 Message-Digest Algorithm, including various modifications by Spyglass Inc., Carnegie Mellon University, and Bell Communications Research, Inc (Bellcore). Regular expression support is provided by the PCRE library package, which is open source software, written by Philip Hazel, and copyright by the University of Cambridge, England. The original software is available from ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/ Apache 2 relies heavily on the use of autoconf and libtool to provide a build environment. This binary distribution includes cryptographic software written by Eric Young (eay@cryptsoft.com), software written by Tim Hudson (tjh@cryptsoft.com), and software developed by the OpenSSL Project for use in the OpenSSL Toolkit . This binary distribution of mod_deflate.so includes zlib compression code written by Jean-loup Gailly (jloup@gzip.org) and Mark Adler (madler@alumni.caltech.edu) .