Clarifications that we're talking about the Fortran PGI compiler.

This commit was SVN r30317.

README

@@ -159,11 +159,11 @@ Compiler Notes
   might want to double check that you have the latest bug fixes and
   patches for your compiler.
 
-- Users have reported issues with older versions of the PGI compiler
-  suite when using Open MPI's (non-default) --enable-debug configure
-  option.  Per the above advice of using the most recent version of a
-  compiler series, the Open MPI team recommends using the latest
-  version of the PGI suite, and/or not using the --enable-debug
+- Users have reported issues with older versions of the Fortran PGI
+  compiler suite when using Open MPI's (non-default) --enable-debug
+  configure option.  Per the above advice of using the most recent
+  version of a compiler series, the Open MPI team recommends using the
+  latest version of the PGI suite, and/or not using the --enable-debug
   configure option.  If it helps, here's what we have found with some
   (not comprehensive) testing of various versions of the PGI compiler
   suite:
@@ -176,8 +176,8 @@ Compiler Notes
             --enable-debug)
     pgi-13: 13.10 known GOOD
 
-- Similarly, there is a known PGI compiler issue with long source
-  directories that was resolved in 9.0-4 (9.0-3 is known to be
+- Similarly, there is a known Fortran PGI compiler issue with long
+  source directories that was resolved in 9.0-4 (9.0-3 is known to be
   broken in this regard).
 
 - On NetBSD-6 (at least AMD64 and i386), and possibly on OpenBSD,