This patch adds support for the new MPI-3 compare-and-swap routine.  The
implementation embeds the data into the packet header to reduce the number of
messages.

Reviewer: buntinas

AM_PROG_AR is available.

No reviewer.

this.

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Reviewed by robl.

No reviewer.

 - add a default for PAC_SET_HEADER_LIB_PATH
 - refactor it to be a bit more readable and flexible
 - several corrections to the original code which used CFLAGS and
   CPPFLAGS incorrectly.

Reviewed by buntinas.

longer used.

Reviewed by buntinas.

No reviewer.

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Pulled bit manipulation arithmetic into macros for converting handles to
indices in MPIR_Op and MPIR_Op_check_dtype function pointer tables.

Reviewer: buntinas

Updated window model and flavor attributes in the window object from integers
to enum types.

Reviewer: buntinas

This commit adds an implementation of MPI-3 dynamic windows.  This
implementation exposes all of memory in the window, rendering attach and detach
as no-ops.  Currently, no error checking is done to determine if RMA ops target
valid/exposed locations at the target.  This would be a nice addition (and can
be done at the target in the two-sided ch3 implementation), but it would incur
a O(log(attached_segments)) performance cost.

Reviewer: buntinas

Added the missing disp_unit argument (was added in a later revision of the MPI
3.0 spec) and fixed a bug in base pointer calculations when processes pass a
size of 0.  Added a test case to test MPI-2 ops on shared memory windows.

Reviewer: buntinas

This is an first step in implementing MPI_Get_accumulate.  Currently, only
communication with self is supported.

Reviewer: buntinas

Moved RMA implementation constants from mpidimpl.h to the RMA implementation
header.  Also updated constants to use enumeration types and removed an old
fixme note, which indicated that this should be done.

Reviewer: buntinas

[svn-r10135] Partial fixes for broken attribute handling, including FIXMEs that must still be addressed

Updates from Jeff Hammond and a few more that I caught to enable more tests to
build cleanly without MPI-3 or on non-MPICH MPI implementations.  This includes
the patch Jeff submitted in #1510.

Reviewer: buntinas

AFAIK we have not deleted or otherwise incompatibly altered any of the
interfaces that we expose.  However, several new APIs and a few new
constants have been added, so we need to bump the "current" field while
still supporting the previous interface.  Hence, from "6:1:0" to
"7:0:1".

No reviewer.