Add 1.5.2 items.

This commit was SVN r24343.

README

@@ -153,7 +153,7 @@ Known issues
 ===========================================================================
 
 The following abbreviated list of release notes applies to this code
-base as of this writing (6 July 2010):
+base as of this writing (5 October 2010):
 
 General notes
 -------------
@@ -191,7 +191,6 @@ General notes
   - PBS Pro, Open PBS, Torque
   - Platform LSF (v7.0.2 and later)
   - SLURM
-  - XGrid (known to be broken in the 1.3 and 1.4 series)
   - Cray XT-3 and XT-4
   - Sun Grid Engine (SGE) 6.1, 6.2 and open source Grid Engine
   - Microsoft Windows CCP (Microsoft Windows server 2003 and 2008)
@@ -351,17 +350,6 @@ General Run-Time Support Notes
   using the --prefix or --enable-mpirun-prefix-by-default
   functionality (see below).
 
-- LAM/MPI-like mpirun notation of "C" and "N" is not yet supported.
-
-- The XGrid support is experimental - see the Open MPI FAQ and this
-  post on the Open MPI user's mailing list for more information:
-
-  http://www.open-mpi.org/community/lists/users/2006/01/0539.php
-
-  *** NOTE: Open MPI's XGrid support is known to be broken in the 1.3
-      and 1.4 series.  Are you an OS X developer?  We'd love to have
-      someone join us to fix this stuff.
-
 - Open MPI's run-time behavior can be customized via MCA ("MPI
   Component Architecture") parameters (see below for more information
   on how to get/set MCA parameter values).  Some MCA parameters can be