Changes

Fix Eclipse build and Ant makefile

Added proper targets to the Eclipse build. Fixed the Ant makefile
so it works for paths with spaces in them.

Fixed a variety of compilation and runtime errors

Fixed package change from javax.media to com.jogamp; fixed problems with
generics; fixed dead-code and similar warnings; fixed problem with struct
accessor on Julia3d using element offsets where it should have used byte
offsets; updated Eclipse project files

Add debug build targets to match those in gluegen and jogl

Fix radix sort on Mac

Fixes a __local variable which must be declared at __kernel function
scope (only the Mac complains about this, but it seems to be that
way in the spec too). Has the nice effect of removing a Mac-specific
ifdef from the kernel code which wasn't being used correctly.
Also added some code to check allowed work group sizes.