* Add initial python support to CMake build

* pybind11 2017-04-07 (1df91d36)

Code extracted from:

    https://github.com/pybind/pybind11.git

at commit 1df91d36cfa997c8987889234304ea5e37cc3e68 (v2.1.1).

* Build python bindings with cmake

* Adjust for adios2py -> adios2 module name

* Added examples for variables

* fix more example code

* make Open explicit in ADIOS1 toolkit. Fix handling open mode

* fix OpenModeToString() to serve adios 1 API's needs as well

* fix basic examples after code refactoring

* fix nompi build for basic examples

* fix nompi build

bool flag checks are implicit
Removed single letter enums in ADIOSTypes.h
All enums are enum class in ADIOSTypes.h using CamelCase
ADIOS uses delegating constructor
Using return type of emplace for IO (in ADIOS) and Variable (in IO)
Removed all base class include from inl template file

1 Now IO (replaced Method) and is the factory for Variables and Engines
2 Reduced core components to user-public objects only
3 Moved and reorganized all helper functions to helper directory
4 Engines are now lightweight (except for ADIOS1Reader WIP) using MACRO
5 HF5Common and ADIOS1Common (except for Readers WIP) are now part of the toolkit so they can be reused by Engines
6 TransportMan is a new layer for transport management (file is default)
7 DataMan will be implemented under toolkit/transportman/dataman
8 Template separation (tcc and inl) applied all over the code
9 Improved Doxygen documentation

Runtime Issues:
DataMan library compilation (cacheman)
ADIOS1 Warning
TestADIOSInterfaceWrite catches exceptions

Fix hello examples with new DefineVariable() syntax, for BP, timeBP and ADIOS1. Missing HDF5 and DataMan

- Added examples/groupless/multistep writer example to the build
- Added ADIOS1 reader but it does not work yet
- Added heat transfer example reader

helloBPWriter and timeBPWriter

Will merge into groupless branch

Single variable example works. Moving on to time aggregation example.

Now file.bp/profiling.log is generating capturing I/O profile info

Started implementation of bindings/python using boost::python
Modified Makefile to allow for dynamic library compilation

To do:
Work on time aggregation

Tests with bpls indicate that variable payloads are recognized

Renamed BPWriter engine to BPFileWriter

Changed WriteVariableIndex function in BP1Writer to only include a
capsule::STLVector as buffers, other capsules will need to get it from
this heap buffer.

To do:
add profiling info (time)

Now printing last variable values with bpls. 

Need to fix so payload offset is set for all variables correctly. 

Replaced vectors with map containers for Variables to avoid iterator
invalidation when adding element to a container. 

Metadata is correctly interpreted by ADIOS 1.0 bpls

To do:
Need to debug values from bpls -d option

Continued debugging BP1 Writer for a single variable write

examples/hello/bpWriter working

To do:

BPReader examples and BP1Reader class