Added VVBufferPool, VVISFKit, DDMathParser, and JSONKit frameworks.  Added test apps demonstrating how to use VVBufferPool and VVISFKit to do a number of common render-to-texture and display tasks.

- the VVBufferPool framework provides a simple API for creating, rendering to, working with/managing, and displaying GL textures and buffers.  Support is included for working with a number of native mac APIs (NSImages, bitmap reps, CIImages, QC compositions, QT movies), and the framework is simple and low-level enough to be used to "wrap" other hardware-accelerated APIs and act as a reasonable common backbone for managing graphic resources and sharing them between APIs.  VDMX is built on these classes.
- the VVISFKit framework is my ISF implementation.  ISF is a simple, minimal image filter format that I made up one day because it was faster and easier than dealing with other similar APIs.  Uses VVBufferPool to create/manage GPU resources for rendering.  More info on ISF- including sample apps and over a hundred filters and generative sources- can be found here: http://vidvox.net/rays_oddsnends/ISF.html
- the JSONKit framework is a venerable bit of code written by John Engelhart (https://github.com/johnezang/JSONKit).  JSONKit is included as a framework in this project to reduce dependencies and make it easier to integrate with projects.  In this project, JSONKit is used by VVISFKit (and anything that uses VVISFKit) to parse JSON data.  Why JSONKit instead of NSJSONSerialization?  Because everything in this project has to run under 10.6, and NSJSONSerialization didn't appear until 10.7...
- the DDMathParser framework is a lovely piece of work by Dave DeLong (https://github.com/davedelong/DDMathParser).  This project is using an old version of DDMathParser (commit 3E6A35 in the repos) to ensure compatibility with 32-bit/non-ARC environments.  In this project, DDMathParser is used by VVISFKit (and anything that uses VVISFKit) to parse and solve basic math expressions in JSON blobs.
- GLScene Test App demonstrates how to do use the VVBufferPool framework to easily render-to-texture with a VVBuffer using generic GL drawing commands, as well as how to create a VVBuffer/GL texture from an image file.
- CIGLScene Test App demonstrates how to use VVBufferPool to convert CIImages to GL textures- this makes it very, very easy to work with CIFilters and GL textures.
- QCGLScene Test App demonstrates how to use VVBufferPool to render QC compositions to GL textures, as well as how to do MSAA rendering for smoother output images under some circumstances
- ISFGLScene Test App demonstrates how to use VVBufferPool and VVISFKit to open, interact with, and render ISF files to GL textures
- QT and Hap Test App demonstrates how to use VVBufferPool to render QuickTime movies to GL textures.  Also shows how to use VVBufferPool to decode Hap video frames.