+ Move most of the octree searching functionality from triSurfaceMesh into
  triSurfaceSearch. Much of it was duplicated anyway.
+ Add triSurfaceRegionSearch, which constructs an octree for each region in
  a surface and performs searches on specified regions only.

triSurface.sortedEdgeFaces() now calls PatchTools::sortedEdgeFaces
instead of using a copy of the same code

+ Remove tolerance based method for finding intersections and use the
  new method of masking previously hit shapes from the octree.

+ Change && to ||, as if a face is small the area calculation can
  differ on opposing processors

+ Do not calculate transform with NOORDERING

+ Make intersection and nearest functions functors. This makes adding
  different intersection and nearest routines easier.
+ treeDataPrimitivePatch takes its tolerance as a constructor argument
+ Make treeDataTriSurface a typedef of treeDataPrimitivePatch

If geometricTestOnly is set to true then edges will not be marked as region
edges, only as internal or external edges. If there are any edges still
marked as regions then this is because they are non-manifold.