Merge pull request #1171 from jwuttke/ffp2

Sample/HardParticle/PolyhedralComponents.cpp

Sample/HardParticle/PolyhedralComponents.h

Sample/HardParticle/Polyhedron.cpp

Sample/HardParticle/Prism.cpp

Tests/SingleUse/README.md

Tests/SingleUse/ff-tetrahedron.cpp

Tests/SingleUse/ff-triangle.cpp

Tests/UnitTests/Numeric/BisectFF.cpp

Tests/UnitTests/Numeric/FormFactorSpecializationTest.cpp

Tests/UnitTests/Numeric/FormFactorSymmetryTest.cpp

auto/Wrap/doxygenSample.i

devtools/math/ff/test/polyh_test.cpp

devtools/math/ff/test/triangle_runs