Update the Readme and Install docs to reflect 2.0 a bit better.

Changes with Apache 2.0b1

  *) Update some of the docs in README and INSTALL to reflect some of

     the changes in Apache 2.0 [Cliff Woolley <cliffwoolley@yahoo.com>]

  *) If we get EAGAIN returned from the call to apr_sendfile, then we

     need to call sendfile again.  This gets us serving large files

     such as apache_2.0a9.tar.gz on FreeBSD again. [Ryan Bloom]

        For some of the support scripts like `apxs' or `dbmmanage'

        (which are written in Perl) the Perl 5 interpreter is required

        (versions 5.003 and 5.004 are fine). If no such interpreter is

        found by APACI's `configure' script this is no harm.  Of

        course, you still can build and install Apache 1.3. Only those

        found by the `configure' script this is no harm.  Of

        course, you still can build and install Apache 2.0. Only those

        support scripts cannot be used. If you have multiple Perl

        interpreters installed (perhaps a Perl 4 from the vendor and a

        Perl 5 from your own), then it is recommended to use the

        --with-perl option (see below) to make sure the correct one is

        selected by APACI.

        selected by ./configure.

     o  Dynamic Shared Object (DSO) support [OPTIONAL]:

                    (-) = disabled per default [enable  with --enable-module ]

     Use the --enable-suexec option to enable the suEXEC feature by

     building and installing the "suexec" support program. Use

     --suexec-caller=UID to set the allowed caller user id,

     --suexec-userdir=DIR to set the user subdirectory,

     --suexec-docroot=DIR to set the suexec root directory,

     --suexec-uidmin=UID/--suexec-gidmin=GID to set the minimal

     allowed UID/GID, --suexec-logfile=FILE to set the logfile and

     --suexec-safepath=PATH to set the safe shell PATH for the suEXEC

     feature. At least one --suexec-xxxxx option has to be provided

     together with the --enable-suexec option to let APACI accept your

     request for using the suEXEC feature.

     building and installing the "suexec" support program.

     CAUTION: FOR DETAILS ABOUT THE SUEXEC FEATURE WE HIGHLY RECOMMEND

              YOU TO FIRST READ THE DOCUMENT htdocs/manual/suexec.html

              YOU NOT CONSIDER USING SUEXEC AND KEEP AWAY FROM THESE

              OPTIONS!

     Use the --shadow option to let APACI create a shadow source tree

     of the sources for building. This is useful when you want to

     build for different platforms in parallel (usually through a NFS,

     AFS or DFS mounted filesystem).  You may specify a directory to

     the --shadow option into which the shadow tree will be created.

     Use the --quiet option to disable all configuration verbose

     messages.

     Use the --verbose option to enable additional verbose messages.

     Use the --server-uid option to specify the user ID you want the

     server to run as. If not specified the server will run as user

     nobody.  If the user ID specified is different than the ID of the

     user starting the server, you need to start the server as root.

     Use the --server-gid option to specify the group ID you want the

     server user ID to be a member of.  If not specified, the group ID

     will be #-1.

  4. Building the package

     --------------------

  modifications by Spyglass Inc., Carnegie Mellon University, and

  Bell Communications Research, Inc (Bellcore).

  This package contains software written and copyrighted by Henry

  Spencer.  Please see the file called src/regex/COPYRIGHT. 

  This package contains software written by Philip Hazel and copyrighted by 

  the University of Cambridge.  Please see the file called 

  srclib/pcre/COPYING. 

  The NT port was started with code provided to the Apache Group

  by Ambarish Malpani of ValiCert, Inc. (http://www.valicert.com/).