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[svn-r7012] replaced NMPI_[i]Send, [i]Recv, Wait[all] and Test with MPIR__impl, or directly called MPID_ functions.  Reviewed by jayesh@

There are probably more uses out there that I am missing at this point.

No reviewer.

This commit may be slightly conservative in some of the pt2pt code, but
it is not obvious that persistent requests handles don't need to be
published safely.  Until it is proven otherwise, we will take the
write memory barrier hit (on some platforms).

No reviewer.

No reviewer.

significant additional functionality.  This change contains the infrastructure
for SMP collectives and an implementation of SMP-aware broadcast.

Reviewed by thakur@.

[svn-r3177] Switch to the new macro for the global thread critical section (most of this is an automated change, tested against the MPICH2 test suite)

the standard fashion.  Previously error codes from the lower layer would be
swallowed up and incorrectly reported as "too many communicators".

release and get it correct.

convention and will no longer obscure problems as "too many communicators".

NOTE: trunk is currently broken as of r1249, but these changes build cleanly
against r1248 so I think they'll be fine once we clean up r1249.