Antonio J. Pena authored Jul 03, 2014 and Kenneth Raffenetti committed Jul 07, 2014

Moved the weak,alias attribute declarations from header files to the
implementation. Complies with the requirement that alias targets are
defined in the same compilation unit.

Fixes #2002

Signed-off-by: Ken Raffenetti <raffenet@mcs.anl.gov>

In response to IBM's integration ticket 1822 (but reworked), turn
MPIO_CHECK_INFO into a collective macro; exchange result of info
inspection with all procs.  Now a bogus info on one proc won't cause a
process hang.

1). There was error checking on the comm object in
    MPI_Comm_test_inter(comm, &flag); So if the return value of
    MPI_Comm_test_inter is not MPI_SUCCESS, then the comm is either an
    invalid MPI_Comm handle or intercommunicator handle.
2). A new macro MPIO_CHECK_INFO is added into adioi_error.h. It will
    call MPI_Info_dup, unless there is no more memory space left , as
    long as the info object is valid, this function will return
    MPI_SUCCESS; or it will return an error code. So by checking the
    return value of MPI_Info_dup, we could achieve the purpose of
    checking MPI_Info handles.

Based on patch 0006 from the second round of IBM's error checking
patches.  Replaces 0009 from the first round and augments r10637.

Contributed by IBM.  Based on patch 0009 from code discussions.

notation to match the MPI-3 standard: io.

Reviewed by dinan.

By setting "indent-tabs-mode:nil" we should hopefully begin to slowly
squeeze out hard tabs from the source without a disruptive (to
downstream projects) whitespace-fixing change.

No reviewer.

This is done as a separate commit to de-clutter the change with actual
logic changes in it.

No reviewer.

[svn-r5355] Added (or moved) MPIU_THREADPRIV_DECL so that the thread-private area is acquired only once within a routine, since the data (pointer to the thread-private area) is fixed during the execution.  This reduces the overhead of the nest increment/decrement, for example

[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)