Fix bug

[ 555817 ] Flawed fcntl.ioctl implementation.

with my patch that allows for an array to be mutated when passed
as the buffer argument to ioctl() (details complicated by
backwards compatibility considerations -- read the docs!).
diff --git a/Misc/NEWS b/Misc/NEWS
index a6dc7c6..bb13310 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@
 Extension modules
 -----------------
 
+- Modified the fcntl.ioctl() function to allow modification of a passed
+  mutable buffer (for details see the reference documentation).
+
 - Made user requested changes to the itertools module.
   Subsumed the times() function into repeat().
   Added chain() and cycle().