add note related to r14857

This commit was SVN r14858.

The following SVN revision numbers were found above:
  r14857 --> open-mpi/ompi@508da4e959

NEWS

@@ -29,6 +29,9 @@ version 1.0.
 Trunk (not on release branches yet)
 -----------------------------------
 
+- Use _NSGetEnviron instead of environ on Mac OS X so that there
+  are no undefined symbols in the shared libraries.
+  --> Expected 1.2.3
 - No longer require extra include flag for the C++ bindings.
   --> Expected 1.2.3
 - Fix problem with optional Fortran types to be correctly initialized.