These provide an appropriate BitPortal for use in worklets.

BitFields are:
- Stored in memory using a contiguous buffer of bits.
- Accessible via portals, a la ArrayHandle.
- Portals operate on individual bits or words.
- Operations may be atomic for safe use from concurrent kernels.

The new BitFieldToUnorderedSet device algorithm produces an ArrayHandle
containing the indices of all set bits, in no particular order.

The new AtomicInterface classes provide an abstraction into bitwise
atomic operations across control and execution environments and are used
to implement the BitPortals.

1d980ed1 Thrust Patches tried to apply CUDA 10.1 patches to CUDA 10.0
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1639

f05940aa ThrustPatches now only patches fixes for relevant cuda versions
20d6201a Suppress thrust::mr::stateless_resource_allocator host/device warnings
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1637

Rather than always patch Thrust functions, we now only patch
based on the Thrust version.

0130088b Suppress more self-assign-overloaded warnings found by clang
fa545585 UnitTestArrayPortalValueReference doesn't warn when compiled with appleclang
5cc0d03f Merge branch 'upstream-diy' into clang_warnings
dbd3781d diy 2019-04-09 (f7a68da4)
5c2f2ebc suppress warnings found by Wself-assign-overloaded
77426f04 Correct casting long to long long warning from clang.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1635

* upstream-diy:
  diy 2019-04-09 (f7a68da4)

Code extracted from:

    https://gitlab.kitware.com/third-party/diy2.git

at commit f7a68da4fbe93ae7a8699b66f125a98ace842998 (for/vtk-m).

dae779b9 ArrayHandleVirtual bugfixes
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Robert Maynard <robert.maynard@kitware.com>
Merge-request: !1632

2bbf501c Fix a bug in MakeTestDataset
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kenneth Moreland <kmorel@sandia.gov>
Merge-request: !1633

In Make3DExplicitDataSetZoo, only 25 cells are added, but the variable `nCells`
is set to 27.

After the change to `ArrayHandleVirtual` where it became a subclass of
`vtkm::cont::ArrayHandle`, a few extra changes are required.

1. Functions with `ArrayHandleVirtual` as parameters will not be callable
with the superclass `ArrayHandle`. This is fixed by changing the argument
types to the superclass.
2. Add Serialization classes specializations for the superclass, as "is-a"
relation is not considered for class template parameters.

364bdce5 Correctly override the proper PrepareForExecution method
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1631

58884a72 Fix warnings found when cuda is the cuda host compiler
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1630

1d20ae4f Move DeviceAdapterTag to vtkm/cont
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1624

30aedf28 Refactor the design of CellLocator::PrepareForExecution
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kenneth Moreland <kmorel@sandia.gov>
Merge-request: !1627

e43770a3 Update pyexpander input files to work with python 3
23f0905a Support pyexpander using python 3
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Robert Maynard <robert.maynard@kitware.com>
Merge-request: !1628

Python 3 does not use xrange anymore. Use the range function instead.

The try execute functor now doesn't need to be a member of the
class. This helps with the separation of concerns.

When you install pyexpander with pip under python 3, the executable
script is now named expander3.py instead of expander.py. Support using
either file.

72cb6343 Move vtkm::cont::CastAndCall into a header in vtkm/cont
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kenneth Moreland <kmorel@sandia.gov>
Merge-request: !1622

7ea2accb Correct issues when using a cuda enabled install of vtk-m.
001d1b0f VTK-m can now build and test against temporary installed vtkm.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Kenneth Moreland <kmorel@sandia.gov>
Merge-request: !1621

18f3b0dc Document all the free functions for VariantArrayHandle
5180d6a7 DynamicCellSet has the same free function support as VariantArrayHandle
8f545662 CellSet uses NewInstance to be consistent with the rest of VTK-m
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Sujin Philip <sujin.philip@kitware.com>
Merge-request: !1620

61d41c9d Update what VTK-m versions of dependencies we test against.
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1626

We had a out of date set of versions listed in our README.

f1056aff Move select functions to host only to remove host/device suppressions
4f2156df Thrust detail::aligned_reinterpret_cast doesn't warn now
f4840618 Make sure ThrustPatches is included before thrust.
b2bbd66e Merge branch 'upstream-taotuple' into update_taoo
4ec6fc81 taotuple 2019-04-03 (8e70fa8a)
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Allison Vacanti <allison.vacanti@kitware.com>
Merge-request: !1607