[PATCH 10/27] Append root_dir to pants path extension mechanism
[PATCH 10/27] Append root_dir to pants path extension mechanism

RB_ID=277943

(sapling split of f7841f10c797dd45b14ee0921ea0477adc85335b)

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