Refs trac:868, #869

The fix for #868, r14358, introduced an (unneeded?) inconsitency...
For Mac OS X systems, inttypes.h will always be included with opal_config.h,
and NOT included for non-Mac OS X systems.  For developers using Mac OS X,
this masks the need to include inttypes.h or more properly opal_stdint.h.

This changeset corrects one of these oopses.  However, the underlying problem
still exists.  Moving the equivelent of r14358 into opal_stdint.h from
opal_config_bottom.h might be the "right" solution, but AFAIK, we would then
need to replace each direct inclusion of inttypes.h with opal_stdint.h to
properly address tickets #868 and #869.

This commit was SVN r20196.

The following SVN revision numbers were found above:
  r14358 --> open-mpi/ompi@dce72aab70

The following Trac tickets were found above:
  Ticket 868 --> https://svn.open-mpi.org/trac/ompi/ticket/868

opal/dss/dss_print.c

@@ -18,6 +18,7 @@
 
 #include "opal_config.h"
 
+#include "opal_stdint.h"
 #include <stdio.h>
 
 #include "opal/dss/dss_internal.h"