Expose a PEX instance's path. (#332)
Expose a PEX instance's path. (#332)

Useful when merging pexes via PEX_PATH.
pantsbuild/pex,sixninetynine/pex,jsirois/pex,jsirois/pex,sixninetynine/pex,kwlzn/pex,kwlzn/pex,pantsbuild/pex,snyaggarwal/pex,snyaggarwal/pex