[m-rev.] for review: update README.MinGW

[Julien Fischer]

I will add some stuff about building the java, erlang, and csharp
with MinGW and MSYS in a separate change.

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Branches: main, 11.01

Update README.MinGW

README.MinGW:
 	Describe how to use the GUI installer for MinGW and point
 	users to the mingw website for details on how to use other,
 	e.g. the command line, installers.

 	Delete instructions specific to the older releases of MinGW/MSYS.
 	(If anyone asks, we don't support those releases anymore.)

 	Delete a note about the Microsoft Management Console; configure
 	now contains a workaround for that problem.

 	Delete a note regarding an old version of autconf that doesn't
 	work.  The autoconf supplied with recent versions of MinGW does
 	work.

Julien.

Index: README.MinGW
===================================================================
RCS file: /home/mercury/mercury1/repository/mercury/README.MinGW,v
retrieving revision 1.12
diff -u -r1.12 README.MinGW
--- README.MinGW	13 Jul 2010 09:19:36 -0000	1.12
+++ README.MinGW	4 Jan 2011 07:06:11 -0000
@@ -18,22 +18,16 @@
  1.  Download and install MinGW and MSYS
      (available from <http://www.mingw.org>).

-    To get MinGW just download the Automated MinGW Installer and run it.
+    The simplest installation method for MinGW and MSYS is to download and
+    run the MinGW GUI installer.  In order to build and install Mercury you
+    will require at least the following components:
+
+    - MinGW Compiler Suite (C compiler)
+    - MSYS Basic System
+    - MinGW Developer Toolkit

-    To get a version of MSYS which is capable of installing Mercury is
-    slightly more difficult.  The following process works as of 2009-09-30.
-
-    - Run MSYS-1.0.11.exe
-    - Run msysDTK-1.0.1.exe
-    - Open an MSYS console window
-    - cd /
-    - tar --lzma -xf bison-2.4.1-1-msys-1.0.11-bin.tar.lzma
-    - tar --lzma -xf flex-2.5.35-1-msys-1.0.11-bin.tar.lzma
-    - tar --lzma -xf libregex-1.20090805-1-msys-1.0.11-dll-1.tar.lzma
-
-    If bison complains about msys-intl-8.dll being missing then you need to
-    also install libintl-*-msys-dll-8.tar.lzma.  This file is part of the MSYS
-    gettext package.  It should be installed as above.
+    Details of alternative MinGW and MSYS installation methods may be found
+    on the MinGW website.

  2.  Unpack the source distribution with a command like:

@@ -57,8 +51,7 @@

  Add /c/mercury/bin (or whatever path you installed Mercury to) to the MSYS
  PATH (you cannot add `c:/mercury/bin' to the MSYS PATH because `:' is used to
-separate directories in the MSYS PATH).  Make sure Mercury's mmc appears in the
-PATH before the Microsoft Management Console.
+separate directories in the MSYS PATH).

  NOTE TO DEVELOPERS: the tools/bootcheck script does not work properly
  on MSYS at the moment -- it will build stage 3, but will not run the tests
@@ -68,12 +61,6 @@
  gets added to the end of each line under MinGW.  Then run mmake from the tests
  directory.

-NOTE TO DEVELOPERS: there may be problems with configure scripts generated by
-the MinGW/MSYS versions of autoconf.  The script will appear to run correctly
-but generates incorrect mercury_conf.h files.  A working version of autoconf
-is available here:
-    <http://downloads.sourceforge.net/mingw/autoconf2.5-2.61-1-bin.tar.bz2>
-
  -----------------------------------------------------------------------------

  BUILDING A CYGWIN COMPILER WHICH TARGETS MINGW

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