Added the cuda SDK's visualizer for nbody
Accidentally committed temporary files. Whoops.
Makefile wibbles
Added -threaded to linking step.
Fixed ordering of timestep and softening
Increased demo time
nbody/visualizer now uses proper accelerate types
Fixed test for inside a circle inside smoothlife
strip short command line options that require an argument

these don't work because the flag and argument get separated; user must use the --long-option=flag style
fix bug with Canny

Thanks to @neiljamieso for spotting this.

fixes AccelerateHS/accelerate#106