Remove classpath contamination possibility.
Remove classpath contamination possibility.

(sapling split of 27a773db9c0e825c05b91b8eb6f319afaf031006)
sameerparekh/pants,jessrosenfield/pants,ericzundel/pants,gmalmquist/pants,qma/pants,scode/pants,dgomez10/xanon,ity/pants,scode/pants,megaserg/pants,sameerparekh/pants,foursquare/pants,lahosken/pants,jessrosenfield/pants,15Dkatz/pants,di0spyr0s/pants,slyphon/pants,mateor/pants,15Dkatz/pants,UnrememberMe/pants,di0spyr0s/pants,dbentley/pants,pantsbuild/pants,kwlzn/pants,benjyw/pants,megaserg/pants,landism/pants,wisechengyi/pants,lahosken/pants,digwanderlust/pants,kslundberg/pants,jessrosenfield/pants,ericzundel/pants,dbentley/pants,gmalmquist/pants,foursquare/pants,tdyas/pants,cevaris/pants,manasapte/pants,laurentgo/pants,pombredanne/pants,di0spyr0s/pants,15Dkatz/pants,ericzundel/pants,twitter/pants,ity/pants,baroquebobcat/pants,pgroudas/pants,tdyas/pants,dbentley/pants,digwanderlust/pants,foursquare/pants,wisechengyi/pants,sid-kap/pants,laurentgo/pants,pantsbuild/pants,pantsbuild/pants,mateor/pants,pantsbuild/pants,areitz/pants,scode/pants,ericzundel/pants,UnrememberMe/pants,kslundberg/pants,square/pants,sid-kap/pants,peiyuwang/pants,gmalmquist/pants,fkorotkov/pants,kslundberg/pants,TansyArron/pants,dturner-tw/pants,dturner-tw/pants,laurentgo/pants,peiyuwang/pants,manasapte/pants,sid-kap/pants,TansyArron/pants,kwlzn/pants,manasapte/pants,ericzundel/pants,areitz/pants,15Dkatz/pants,kslundberg/pants,manasapte/pants,tejal29/pants,wisechengyi/pants,tejal29/pants,jtrobec/pants,UnrememberMe/pants,kslundberg/pants,ity/pants,areitz/pants,megaserg/pants,jessrosenfield/pants,tejal29/pants,landism/pants,kwlzn/pants,Gabriel439/pants,manasapte/pants,twitter/pants,Gabriel439/pants,cevaris/pants,areitz/pants,manasapte/pants,twitter/pants,scode/pants,tdyas/pants,slyphon/pants,Gabriel439/pants,lahosken/pants,jtrobec/pants,mateor/pants,slyphon/pants,twitter/pants,dbentley/pants,laurentgo/pants,15Dkatz/pants,megaserg/pants,wisechengyi/pants,wisechengyi/pants,laurentgo/pants,dgomez10/xanon,jsirois/pants,peiyuwang/pants,scode/pants,ericzundel/pants,fkorotkov/pants,cevaris/pants,UnrememberMe/pants,fkorotkov/pants,ity/pants,baroquebobcat/pants,slyphon/pants,pantsbuild/pants,peiyuwang/pants,ity/pants,qma/pants,slyphon/pants,dturner-tw/pants,wisechengyi/pants,pgroudas/pants,dgomez10/xanon,Gabriel439/pants,jtrobec/pants,benjyw/pants,ity/pants,tdyas/pants,pgroudas/pants,gmalmquist/pants,peiyuwang/pants,UnrememberMe/pants,kslundberg/pants,scode/pants,pgroudas/pants,dbentley/pants,UnrememberMe/pants,cevaris/pants,megaserg/pants,benjyw/pants,fkorotkov/pants,qma/pants,Gabriel439/pants,tejal29/pants,mateor/pants,pgroudas/pants,dbentley/pants,pombredanne/pants,cevaris/pants,foursquare/pants,dgomez10/xanon,landism/pants,jessrosenfield/pants,15Dkatz/pants,sameerparekh/pants,mateor/pants,baroquebobcat/pants,foursquare/pants,tdyas/pants,lahosken/pants,digwanderlust/pants,jessrosenfield/pants,landism/pants,dturner-tw/pants,TansyArron/pants,Gabriel439/pants,landism/pants,gmalmquist/pants,foursquare/pants,wisechengyi/pants,gmalmquist/pants,UnrememberMe/pants,digwanderlust/pants,baroquebobcat/pants,baroquebobcat/pants,sameerparekh/pants,di0spyr0s/pants,jessrosenfield/pants,jsirois/pants,dgomez10/xanon,baroquebobcat/pants,twitter/pants,fkorotkov/pants,15Dkatz/pants,areitz/pants,kslundberg/pants,kwlzn/pants,cevaris/pants,dturner-tw/pants,sid-kap/pants,jtrobec/pants,dgomez10/xanon,slyphon/pants,tejal29/pants,peiyuwang/pants,digwanderlust/pants,qma/pants,pantsbuild/pants,fkorotkov/pants,jtrobec/pants,baroquebobcat/pants,landism/pants,twitter/pants,mateor/pants,scode/pants,fkorotkov/pants,foursquare/pants,dgomez10/xanon,dbentley/pants,twitter/pants,landism/pants,kwlzn/pants,ericzundel/pants,benjyw/pants,baroquebobcat/pants,qma/pants,pombredanne/pants,Gabriel439/pants,foursquare/pants,jtrobec/pants,jsirois/pants,sid-kap/pants,tdyas/pants,tdyas/pants,jtrobec/pants,pgroudas/pants,kwlzn/pants,dgomez10/xanon,di0spyr0s/pants,pombredanne/pants,cevaris/pants,UnrememberMe/pants,sid-kap/pants,dgomez10/xanon,square/pants,sameerparekh/pants,peiyuwang/pants,wisechengyi/pants,pantsbuild/pants,pombredanne/pants,TansyArron/pants,digwanderlust/pants,sameerparekh/pants,dturner-tw/pants,manasapte/pants,peiyuwang/pants,tdyas/pants,kwlzn/pants,lahosken/pants,TansyArron/pants,dgomez10/xanon,tdyas/pants,square/pants,foursquare/pants,qma/pants,di0spyr0s/pants,laurentgo/pants,lahosken/pants,benjyw/pants,square/pants,benjyw/pants,pombredanne/pants,megaserg/pants,baroquebobcat/pants,dturner-tw/pants,areitz/pants,mateor/pants,lahosken/pants,ity/pants,di0spyr0s/pants,fkorotkov/pants,sameerparekh/pants,areitz/pants,ericzundel/pants,pombredanne/pants,twitter/pants,dgomez10/xanon,qma/pants,twitter/pants,megaserg/pants,TansyArron/pants,UnrememberMe/pants,slyphon/pants,lahosken/pants,sid-kap/pants,mateor/pants,wisechengyi/pants,15Dkatz/pants,TansyArron/pants,benjyw/pants,landism/pants,gmalmquist/pants