Sync NEWS and README with 1.7.5

This commit was SVN r31122.

NEWS

@@ -63,8 +63,11 @@ Trunk (not on release branches yet)
 
 1.7.5
 -----
-
-- Add OSHMEM support built on top of Open MPI's MPI layer
+ **********************************************************************
+ *  Open MPI is now fully MPI-3 compliant
+ **********************************************************************
+- Add OSHMEM support built on top of Open MPI's MPI layer. Thanks
+  to Mellanox for contributing this new feature.
 - Support GCC/gfortran 4.9's "ignore TKR" syntax.  Thanks to Tobias
   Burnus for adding this support to gfortran.
 - Allow restricting ORTE daemons to specific cores using
@@ -73,6 +76,10 @@ Trunk (not on release branches yet)
 - MPI-3 compliant.
 - Multiple fixes to mapping/binding options. Thanks to Tetsuya Mishima
   for his assistance
+- Add a new collective component (coll/ml) that provides
+  substantially improved performance. Will eventually become the
+  default, but for now requires setting coll_ml_priority > 0 to
+  become active
 
 
 1.7.4

README

@@ -531,7 +531,7 @@ MPI Collectives
   in modern systems. A ML collective operation is implemented by 
   combining multiple independently progressing collective primitives 
   implemented over different communication hierarchies, hence a ML 
-  collective operation is also reffered to as a hierarchical collective 
+  collective operation is also referred to as a hierarchical collective 
   operation. The number of collective primitives that are included in a 
   ML collective operation is a function of subgroups(hierarchies). 
   Typically, MPI processes in a single communication hierarchy such as