Solving issue #320 DeclareIO must be called at least once

If IO object to be used.
InquireIO returns nullptr if DeclareIO not called.
Two calls to DeclareIO with the same name will throw an exception

Reading bp files using stepping mode BeginStep EndStep

Modifying file names

Sst integration

String variable support 

sync with william's changes for h5read/write/mixer

Tweak cmake functions to properly interpret evpath_config output.  Tweak include position to avoid reordering.

To do: understand blocks per step at write for string

Issue #313 Long integer ambiguity on Mac, Windows and Linux

Resolving long ambiguity
Correcting APPLE MACROS

WIP: Attribute read and write

Add Path separator for Windows tests
And long long (Windows) vs long (Linux) type

Need to add examples and tests
Fixed some bugs in Attribute Read

Warnings from cdash

Removing const in MPI functions first argument. Fix for Issue #309

Reader column-major ordering and tests

Working on Fortran examples
Testing Row Major Reader
Debugging parallel read
Changed file open function
Added initial tests 1D and 2D

DataMan and ZMQ transport worked with the newly refactored architecture

Transport non-blocking IRead IWrite interface

Also in WANZmq, need to implement in cpp

Resolving more cdash warnings issue #300

Valgrind check on Zmq

m_ControlThreads in DataMan must be joined before destroyed 
There is a hanging thread

Add cori builds