Add FAQ about old packages. Remove B20 references.

winsup/doc/install.texinfo

@@ -1,59 +1,61 @@
 @chapter Installation Instructions
 @section Contents
 
-Unlike previous net releases such as B20.1 and earlier, there is no
+There is only one recommended way to install Cygwin, which is to use the GUI
-monolithic "full" or "usertools" installation.  Rather, you can pick and
+installer ``Cygwin Setup''.  It is flexible and easy to use.  
-choose the packages you wish to install, and update them individually.
+You can pick and choose the packages you wish to install, and update
+them individually.  Full source code is available for all packages and
+tools.  More information on using Cygwin Setup may be found at
+@file{http://cygwin.com/cygwin-ug-net/setup-net.html}.
+
+If you do it any other way, you're on your own!  That said, keep in mind
+that the GUI installer is a "work in progress", so there might be a few
+difficulties, especially if you are behind a firewall or have other
+specific requirements.  If something doesn't work right for you, and
+it's not covered here or in the latest development snapshot at
+@file{http://cygwin.com/setup-snapshots/}, then by all means report it to the
+mailing list.
 
 For a searchable list of packages that can be installed with Cygwin,
 see @file{http://cygwin.com/packages/}.
 
-Full source code is available for all packages and tools.
-
-There is only one recommended way to install Cygwin, which is to use the GUI
-installer ``Cygwin Setup''.  It is flexible and easy to use.
-
-Do it any other way, and you're on your own!  That said, keep in mind
-that the GUI installer is a "work in progress", so there might be a few
-difficulties, especially if you are behind a firewall or have other
-specific requirements.  If something doesn't work right for you, and
-it's not covered here or elsewhere, then by all means report it to the
-mailing list.
-
 @section Installation using ``Cygwin Setup''
 
 The Cygwin Setup program is the @emph{only} recommended way to install
-Cygwin.
+Cygwin. 
 
 @subsection Why not install in C:\?
 
 The Cygwin Setup program will prompt you for a "root" directory.
 The default is @samp{C:\cygwin}, but you can change it.  You are urged not to
-choose something like 'C:\' (the root directory on the system drive) for
+choose something like @samp{C:\} (the root directory on the system drive) for
 your Cygwin root.  If you do, then critical Cygwin system directories
-like 'etc', 'lib' and 'bin' could easily be corrupted by other (non-Cygwin)
+like @samp{etc}, @samp{lib} and @samp{bin} could easily be corrupted by
-applications or packages that use \etc, \lib or \bin.  Perhaps there is
+other (non-Cygwin) applications or packages that use @samp{\etc},
-no conflict now, but who knows what you might install in the future?
+@samp{\lib} or @samp{\bin}.  Perhaps there is no conflict now, but who
-It's also just good common sense to segregate your Cygwin "filesystems"
+knows what you might install in the future?  It's also just good common
-from the rest of your Windows system disk.
+sense to segregate your Cygwin "filesystems" from the rest of your
+Windows system disk.
 
 (In the past, there had been genuine bugs that would cause problems
-for people who installed in C:\, but we believe those are gone now.)
+for people who installed in @samp{C:\}, but we believe those are gone
+now.)
 
-@subsection Can I use Cygwin Setup to update a B18, B19, B20, B20.1 or CD-ROM (1.0) installation of Cygwin?
+@subsection Can I use Cygwin Setup to get old versions of packages (like gcc-2.95)?
 
-No, you must start from scratch with the new Cygwin Setup.  The
+Cygwin Setup can be used to install any packages that are on a
-overall structure has changed so much that it would be pointless to
+Cygwin mirror, which usually includes one version previous to the
-try to accomodate old installations of Cygwin.  You will probably be
+current one. The complete list may be searched at 
-much better off with a whole new installation anyway.  You may backup
+@file{http://cygwin.com/packages/}.  There is no complete archive of
-or rename your old installation first, or just install the new one
+older packages. If you have a problem with the current version of
-somewhere else.  Be sure to make note of your current mount table,
+a Cygwin package, please report it to the mailing list using the 
-because this will be overwritten during the new setup.  Make sure you
+guidelines at @file{http://cygwin.com/problems.html}.
-don't end up with two different versions of @samp{cygwin1.dll} on your
-system.
 
-Once you've installed the latest net release, Cygwin Setup will update
+That said, if you really need an older package, you may be able to find
-just the individual packages that need it.
+an outdated or archival mirror by searching the web for an old package
+version (for example, @samp{gcc2-2.95.3-10-src.tar.bz2}), but keep in
+mind that this older version will not be supported by the mailing list
+and that installing the older version will not help improve Cygwin.
 
 @subsection Is Cygwin Setup, or one of the packages, infected with a virus?
 
@@ -276,5 +278,7 @@ to @code{C:\cygwin\bin\cygwin1.dll}.
 
 NO.  Cygwin Setup cannot do this for you.  Use a tool designed for
 this purpose.  See @file{http://rsync.samba.org/},
-@file{http://sunsite.org.uk/packages/mirror/},
 @file{http://wget.sunsite.dk/} for utilities that can do this for you.
+For more information on setting up a custom Cygwin package server, see
+the Cygwin Setup homepage at
+@file{http://sources.redhat.com/cygwin-apps/setup.html}.