Having this policy (Double colon in target name means ALIAS or IMPORTED target)
set to `OLD` only makes sense when CMake 2.8.12 or older. We require a much
newer CMake (3.6), so accept `NEW` as the default.

Use SMTK_PYTHON_MODULEDIR, same as Shiboken case
Also prefix shared objects with underscore, to indicate they are internal

Kitware Robot authored 8 years ago and T.J. Corona committed 8 years ago

Code extracted from:

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

at commit 3c60766babe10d1cb7f2f3de09982e050b7ec506 (for/smtk).

Requires boost date_time library

The HDF5 bug is fixed in 3.6. Rather than not working with 3.6 and up as
before, let's drop 3.5.

On Windows, the `.dll` files were being placed all over the tree rather
than in a consistent location.

On Windows, the `.dll` is required here, but `SHIBOKEN_LIBRARY` is the
path to the `.lib` file instead. The `.dll` is always beside the binary,
so use that instead.

Fixes #87.

This commit introduces a new session type for models that use smtk::mesh as
their backing.

The semicolon is a separator in CMake too, so it needs to be escaped to
get through to be a value of an environment variable rather than
indicate a new environment variable.

Add to the `PYTHONPATH` environment variable used during
testing to handle the case when SMTK tests are run inside
a build of CMB.

This commit updates the fixes from Robert Maynard's
simplify_building_with_gdal_support branch.

This commit is in reference to Issue #40. Originally, the header file
SharedPtr.h was generated to accommodate pre-C++11 builds. Now that we
enforce the use of C++11, the optional use of boost's shared pointers is
unnecessary. This commit removes the mechanisms for choosing between stl's
and boost's shared_ptr, and adds a static header file that uses the stl
version.

Also replace deprecated qt4_use_modules() with current Qt syntax

We are moving the minimum require CMake version for two reasons. The first
is that SMTK requires a C++11 compiler, and we need to use CMake features
from CMake 3.1+. Secondly is that ParaView now requires CMake 3.5 now.

The build will fail later if not, so let's detect the error first.