memoize `./pants path` lookups
memoize `./pants path` lookups

it was dumbly not re-using previous work

cevaris/commons,atollena/commons,pombredanne/commons,pombredanne/commons,pombredanne/commons,ericzundel/commons,ericzundel/commons,jsirois/commons,cevaris/commons,VaybhavSharma/commons,jsirois/commons,brutkin/commons,ericzundel/commons,VaybhavSharma/commons,abel-von/commons,nkhuyu/commons,Yasumoto/commons,atollena/commons,cevaris/commons,abel-von/commons,abel-von/commons,pombredanne/commons,abel-von/commons,atollena/commons,Yasumoto/commons,VaybhavSharma/commons,WCCCEDU/twitter-commons,nkhuyu/commons,nkhuyu/commons,nkhuyu/commons,cevaris/commons,ericzundel/commons,abel-von/commons,cevaris/commons,atollena/commons,nkhuyu/commons,Yasumoto/commons,ericzundel/commons,brutkin/commons,jsirois/commons,VaybhavSharma/commons,WCCCEDU/twitter-commons,pombredanne/commons,WCCCEDU/twitter-commons,WCCCEDU/twitter-commons,atollena/commons,brutkin/commons,Yasumoto/commons,WCCCEDU/twitter-commons,brutkin/commons,brutkin/commons,VaybhavSharma/commons,jsirois/commons,jsirois/commons,Yasumoto/commons