Sync NEWS and README with the v1.6 branch.

This commit was SVN r27919.

NEWS

@@ -110,6 +110,10 @@ Trunk (not on release branches yet)
 1.6.4
 -----
 
+- Automatically provide compiler flags that compile properly on some
+  types of ARM systems.
+- Fix slot_list behavior when multiple sockets are specified.  Thanks
+  to Siegmar Gross for reporting the problem.
 - Fixed memory leak in one-sided operations.  Thanks to Victor
   Vysotskiy for letting us know about this one.
 - Added performance improvements to the OpenIB (OpenFabrics) BTL.

README

@@ -112,6 +112,8 @@ General notes
   (*) Be sure to read the Compiler Notes, below.
 
 - Other systems have been lightly (but not fully tested):
+  - ARM4, ARM5, ARM6, ARM7 (when using non-inline assembly; only ARM7
+    is fully supported when -DOMPI_DISABLE_INLINE_ASM is used).
   - Other 64 bit platforms (e.g., Linux on PPC64)
   - Microsoft Windows CCP (Microsoft Windows server 2003 and 2008);
     see the README.WINDOWS file.