Finalise the NEWS file for the 11.07.1 release.

Branches: main, 11.07

Finalise the NEWS file for the 11.07.1 release.

NEWS:
	Mention the bug-fixes for the csharp grade on Cygwin and
	also that GCC also now works in C99 mode with Mercury.

README.Cygwin:
	Update the list of Windows versions on which the Cygwin
	port has been tested.

NEWS

@@ -17,6 +17,11 @@ Changes to the Mercury standard library:
 NEWS for Mercury 11.07.1-beta
 -----------------------------
 
+This is a bug-fix release.  It fixes a problem that was preventing the standard
+library from building in the csharp grade on Cygwin and also adds support for
+using GCC in C99 (or GNU99) mode with Mercury.  In addition, there are a number
+of minor changes to the standard library.
+
 Changes to the Mercury standard library:
 
 * We have added the predicate map.keys_and_values/3.

README.Cygwin

@@ -4,8 +4,17 @@ INTRODUCTION
 
 Mercury has been ported to Windows using the "Cygwin"
 (formerly also known as "Cygwin32" and "gnu-win32") Unix emulation
-package.  We've tested the port on Windows XP SP2,
+package.  We have tested the port on the following versions of Windows:
-but it should work on Windows 95, 98, ME, 2000 and NT.
+
+    * Windows XP SP3
+    * Windows 7
+    * Windows Server 2008 R2
+
+It should also work with Windows XP SP2 and Windows Vista but we have not
+tested it with those.
+
+In the past Mercury worked with Windows, 95, 98, ME, 2000 and NT but we no
+longer actively maintain support for those versions.
 
 This file documents how to install the binary distribution of
 Mercury on Windows and how to build the source distribution