More adjustments in TopologyRefiner for levels and refiments as ptrs:
    - now incrementally allocates and appends during refinement
    - updated a few more access of member vectors
Fix far_tutorial_2 : remove redundant Vertex copy constructor

fixes #359
Fix GLSL compute code version defintion

- remove #version declaration from the kernel code
- move it in front of shader sources before compiling to prevent some drivers from throwing errors

fixes #360
Refactor Far::StencilTablesFactory

- re-implement the pool allocator
    - use templates to remove code redundancy between regular & limit stencils
    - leverage [] operator overloading to simplify stencil factorization
    - add the ability to treat subdivision levels independently (see below)

- refactor Far::TopologyRefiner::Interpolate<>() methods to pass buffers by reference
  (allows overloading of [] operator)

- rename some of the stencil factory options
- propagate changes to Osd / examples / tutorials...
Adjust near clipping plane in glViewer automatically when SSAO is turned off

- when SSAO is turned off, we can bring the near clipping plane much closer to help close-up inspection...
Fix build for vtrViewer code example (match refactor of Far::StencilFactory)
Fix Far::StencilTablesFactory introduced in re-factor

- big stencil initialization was incorrect
Fix Windows build of Osd OMP CPU kernel

note: we #include <vector> instead malloc.h for portability
Fixed vec array initializer.
Fixed missing namespace closing brace.
Fixed d3d11 and gl mesh wrappers to be
consistent wrt the MeshInterface API.
Fixed Osd namespace use in DX examples.
Fixed VS2012 compile error.
Improved stability on OSX drivers by not declaring unused shader in/out vars.
Added two new regression test shapes.
Fixed rotation for patches with 3 transitional edges.
Added catmark_gregory_test{6,7} to a few examples.
Fixed a few problems with High DPI displays in the example programs.
Updated example framework code to disable SSAO by default.
Fixed glPaintTest build error related to High DPI changes.