- 64-bit builds of gcc/mpfr/gmp use lib64/ for their installation path.
  Use this for the wmake rules as well.

- spurious use of floatScalar instead of scalar for processor weights.

STYLE: partially updated dummy metis.h to reflect metis-5.1.0 API

Fixes #66.

- reported by Bruno

- Also reported as http://bugs.openfoam.org/view.php?id=2188

- add corrsponding testing into surfaceMeshConvertTesting too

BUG: ensightSurfaceReader - enabled reading of data from sub-directory and updated field mask (See #215)

- gearing to make it more reusable in triSurface

This was going wrong in a fair few cases where you would get regions which
were delimited by a combination of intersections with unnamed surfaces (wall)
and named surfaces (faceZone surface) but not with either of these sets
individually. This would cause there to be unvisited cells (zone = -2)
next to a visited cells but separated by a named surface only (and not an
unnamed surface). Fixed by using direct surface intersection in the removal
part. Related to #66.

Fixes partially #93.

- existed, but was not being called

- consistent with approach used elsewhere. Generates smaller files.

- was a small typo

- Propagate cellDist information from internal to patch fields too

NOTE: uses C++11 'auto' and a range-based for loop

- previously just detected the presence of "processor" in the case
  path name. Restrict to checking the final portion.
  Does not solve all problems, but solves ones like this:

      test-new-processor-generation/....