Taking a first stab at a doxygen config file and matching cmake rules.

Also reformatting a chunk of FAR's comments to work w/ doxygen.

Closes #75
Added simpleCpu example with markdown commentary
Merge branch 'master' of https://github.com/PixarAnimationStudios/OpenSubdiv
Clean up simpleCpu code a bit
Fix header issues after merging recent revisions
Fixed a couple build issues with Visual Studio 2010
Fixed a build issue with Visual Studio 2010
Make VertexKernelBatch public when building with clang.

There seems to be a bug in clang: despite the fact that FarMeshFactory is
declared to be a friend class from FarSubdivisionTables, clang protests that
VertexKernelBatch is not accessable.

This hack adds an #ifdef __clang__ block to make that structure public and keep
Far compiling under OSX.
Update simpleCpu example to compile under OSX after refactoring
Merge pull request #83 from jcowles/master

Two updates to fix OSX compilation
Release Candidate 1.0 :

- [Feature Adaptive GPU Rendering of Catmull-Clark Surfaces](http://research.microsoft.com/en-us/um/people/cloop/tog2012.pdf).

- New API architecture : we are planning to lock on to this new framework as the basis for backward compatibility, which we will enforce from Release 1.0 onward. Subsequent releases of OpenSubdiv should not break client code.

- DirectX 11 support

- and much more...
Make sure that shape strings are post-fixed with a null-char when read from file.

fixes #85
- adding Intel OpenCL kit in search paths

fixes #64
defining M_PI to fix some compiler errors on OSX 10.8

fixes #44
adding some ASCII art to document cryptic CV names in Gregory shader code.

fixes #86
Reading the cmake generator string to find out if it's a 32 or 64 build
and force DX SDK linking to detect the correct location.
fix CMake dependencies for shader string in mainApple.mm
fix missing includes

fixes #81
Fixed SRV format for level and valence buffers
Added DirectCompute backend for Osd Compute
Fixed default display modes in example viewers

Now the GL and DX11 viewers display surface+wire by default and display the correct keep-alive animation status.