benchmark.ant: adding the "ant puzzle" benchmark.  See #153.
benchmark.ant: adding the "ant puzzle" benchmark.  See #153.

erg/factor,mcandre/factor,mcandre/factor,mcandre/factor,erg/factor,mcandre/factor,mcandre/factor,erg/factor,erg/factor,erg/factor,mcandre/factor,erg/factor,erg/factor,mcandre/factor