[m-rev.] trivial diff: update NEWS file entry about mutables

[Julien Fischer]

Estimated hours taken: 0
Branches: main, release

NEWS:
	Remove the reference to mutables being impure since it is possible
	to make them pure by attaching them to the I/O state.

Julien.

Index: NEWS
===================================================================
RCS file: /home/mercury1/repository/mercury/NEWS,v
retrieving revision 1.412
diff -u -r1.412 NEWS
--- NEWS	27 Apr 2006 07:34:27 -0000	1.412
+++ NEWS	30 May 2006 07:37:31 -0000
@@ -20,7 +20,7 @@
   of a given goal are equivalent with respect to the relevant equality
   theories.
 * We now have support for optional module initialisation and finalisation.
-* We now have support for impure module-local mutable variables.
+* We now have support for module-local mutable variables.
 * We now have support for recognizing switches in which multiple switch arms
   have shared code.
 * A new pragma allows programmers to promise that in a predicate or function
@@ -207,7 +207,7 @@
   "Module finalisation" section of the Mercury Language Reference
   Manual for details.

-* We have added support for impure module-local mutable variables.
+* We have added support for module-local mutable variables.
   See the "Module-local mutable variables" section of the Mercury Language
   Reference Manual for details.

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