Github #277 Add option to use shared boost libraries
Github #277 Add option to use shared boost libraries

Pass -DSHARED_BOOST=ON to cmake to link dynamically to boost.
This makes it possible to use standard package-installed boost
libraries in a native build.

Change-Id: I6cbd72fae8b0cf8ae07f4382ab0510854c1623fd
Signed-off-by: Matthew Bentham <85b03818c46fb1de46c21a6d16f19bf625d7dee2@arm.com>

ARM-software/armnn,ARM-software/armnn,ARM-software/armnn