Fix PATH_MAX on OS X 10.9.5
Fix PATH_MAX on OS X 10.9.5

Fixes #403

mfikes/planck,slipset/planck,mfikes/planck,slipset/planck,slipset/planck,mfikes/planck,mfikes/planck,slipset/planck,mfikes/planck,slipset/planck,mfikes/planck