COMP: Add cmake option to enable OpenMP
COMP: Build sim interface and programs by default
ENH: Generation of non-abutting extent partitions

Added option to the ExtentPartitioner such that
it can generate abutting and non-abutting partitions.
By default partitions will be abutting, unless,
SetAbutting( false ) is called on the partitioner object.
BUGFIX: Fix interval split

Interval split was always assuming that the extent is starting
from 0. Also, restructured some of the code to simplify it and
make it easier to read.
ENH: Add method to compute extent intersection
ENH: Stream & density field openmp parallelization

This commit adds basic threading of the multi-stream and
density field calculation using openmp.
BUGFIX: Use abs. value when summing up tet volumes
COMP: Add cmake option to enable OpenMP

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1983 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
COMP: Build sim interface and programs by default

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1984 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
ENH: Generation of non-abutting extent partitions

Added option to the ExtentPartitioner such that
it can generate abutting and non-abutting partitions.
By default partitions will be abutting, unless,
SetAbutting( false ) is called on the partitioner object.

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1985 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
BUGFIX: Fix interval split

Interval split was always assuming that the extent is starting
from 0. Also, restructured some of the code to simplify it and
make it easier to read.

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1986 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
ENH: Add method to compute extent intersection

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1987 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
ENH: Stream & density field openmp parallelization

This commit adds basic threading of the multi-stream and
density field calculation using openmp.

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1988 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
BUGFIX: Use abs. value when summing up tet volumes

From: George Zagaris <george.zagaris@kitware.com>

git-svn-id: https://svn.alcf.anl.gov/repos/DarkUniverse/hacc/trunk/cosmotools@1989 952bdfbe-fa2e-45c0-a9ae-ac90d4a62daf
Merge branch 'svn/trunk'