InquireVariable/Attribute working for valid name, but returning invalid
type

ADIOS constructor now has host language so bindings can change define
this at the constructor level

Separated C bindings from C glue (added) for languages using C-API (e.g.
Fortran)

Removed stl containers that pybind11 takes care of

* 'bp1read' of https://github.com/williamfgc/adios2:
  Bp1read (#24)

* Support PutDeferred() in ADIOS1 writer

* added PerformPuts() to ADIOS1Writer

* refactor toolkit/interop/adios1/ADIOS1Common in preparation for having separate Write and Read classes

* Working towards ADIOS1 Reader. Changes the Engine.BeginStep() signature for all engines.

* Updates to ADIOS1 reader, variables and scalar values are propagated now at Open

* fix ADIOS1 reader using the correct step selection values

* Support PutDeferred() in ADIOS1 writer

* added PerformPuts() to ADIOS1Writer

* refactor toolkit/interop/adios1/ADIOS1Common in preparation for having separate Write and Read classes

* Working towards ADIOS1 Reader. Changes the Engine.BeginStep() signature for all engines.

* Updates to ADIOS1 reader, variables and scalar values are propagated now at Open

* Support PutDeferred() in ADIOS1 writer

* added PerformPuts() to ADIOS1Writer

* refactor toolkit/interop/adios1/ADIOS1Common in preparation for having separate Write and Read classes

* Working towards ADIOS1 Reader. Changes the Engine.BeginStep() signature for all engines.

Conflicts:
	examples/hello/bpTimeWriter/CMakeLists.txt
	examples/hello/bpWriter/CMakeLists.txt
	source/adios2/engine/dataman/DataManReader.cpp
	source/adios2/engine/dataman/DataManWriter.cpp
	source/adios2/engine/dataman/DataManWriter.h
	source/adios2/toolkit/transport/file/FileDescriptor.cpp
	source/adios2/toolkit/transport/file/FileDescriptor.h
	source/adios2/toolkit/transport/file/FilePointer.cpp
	source/adios2/toolkit/transport/file/FilePointer.h
	source/adios2/toolkit/transport/file/FileStream.cpp
	source/adios2/toolkit/transport/file/FileStream.h
	source/adios2/toolkit/transportman/dataman/DataMan.cpp
	testing/adios2/bindings/C/TestBPWriteTypes.c
	testing/adios2/bindings/C/TestBPWriteTypes_nompi.c
	testing/adios2/engine/bp/TestBPWriteProfilingJSON.cpp
	testing/adios2/engine/bp/TestBPWriteRead.cpp
	testing/adios2/engine/bp/TestBPWriteReadfstream.cpp
	testing/adios2/engine/bp/TestBPWriteReadstdio.cpp
	testing/adios2/engine/hdf5/TestHDF5WriteRead.cpp
	testing/adios2/interface/TestADIOSDefineAttribute.cpp
	testing/adios2/interface/TestADIOSDefineVariable.cpp

* 'bp1read' of https://github.com/williamfgc/adios2:
  Support PutDeferred() in ADIOS1 writer (#21)

bug1: when writing value characteristic bpdump requires the length before the value
bug2: fixed merging serialized collective metadata index

examples/hello/bpTimeWriter/helloBPWriteStep.cpp

examples/hello/bpWriter/hellBPPutDeferred.cpp

BPWrite_c -> ctypes
XMLConfigTest.TwoIOs -> Test BP Writer 1

Callback Signature classes extend Operator
Operators can be used per Variable, IO or Engine

Continue refactoring IO, ADIOS classes

Changed m_Transports from vector to map, needed by subfile manager

Fix python module path

BP3 Deserialization:
Getting subfile seeks and intersection info
Set host language in bindings for row-major and zero-index info

Detect build image and pick dashboard script based on that