pants PythonTargets should walk provided PythonBinary artifacts
pants PythonTargets should walk provided PythonBinary artifacts

The change to .resolve for PythonLibrary to extend to its binaries in the
case it specified a PythonArtifact caused a regression with pants py.
Instead we should just augment _walk to walk those targets so that they're
properly reflected as members in setup_py.

Reviewed at https://rbcommons.com/s/twitter/r/57/

(sapling split of be88e7c5611b255604d67dd906083b6e4b4ee5d1)
slyphon/pants,kwlzn/pants,15Dkatz/pants,Gabriel439/pants,gmalmquist/pants,landism/pants,dgomez10/xanon,baroquebobcat/pants,TansyArron/pants,dbentley/pants,manasapte/pants,jtrobec/pants,UnrememberMe/pants,qma/pants,gmalmquist/pants,dgomez10/xanon,foursquare/pants,pombredanne/pants,slyphon/pants,foursquare/pants,baroquebobcat/pants,scode/pants,tdyas/pants,UnrememberMe/pants,15Dkatz/pants,areitz/pants,UnrememberMe/pants,qma/pants,manasapte/pants,fkorotkov/pants,dbentley/pants,15Dkatz/pants,qma/pants,square/pants,pgroudas/pants,pgroudas/pants,kslundberg/pants,pombredanne/pants,jessrosenfield/pants,di0spyr0s/pants,fkorotkov/pants,megaserg/pants,ity/pants,tdyas/pants,twitter/pants,landism/pants,jtrobec/pants,wisechengyi/pants,jsirois/pants,TansyArron/pants,fkorotkov/pants,mateor/pants,gmalmquist/pants,pombredanne/pants,dgomez10/xanon,baroquebobcat/pants,wisechengyi/pants,dturner-tw/pants,landism/pants,scode/pants,jessrosenfield/pants,dgomez10/xanon,kwlzn/pants,areitz/pants,twitter/pants,dturner-tw/pants,tdyas/pants,tdyas/pants,benjyw/pants,landism/pants,areitz/pants,ity/pants,cevaris/pants,cevaris/pants,tejal29/pants,tejal29/pants,foursquare/pants,UnrememberMe/pants,dgomez10/xanon,qma/pants,jessrosenfield/pants,pombredanne/pants,foursquare/pants,lahosken/pants,Gabriel439/pants,jtrobec/pants,mateor/pants,Gabriel439/pants,gmalmquist/pants,di0spyr0s/pants,15Dkatz/pants,manasapte/pants,benjyw/pants,ericzundel/pants,tdyas/pants,dgomez10/xanon,pgroudas/pants,peiyuwang/pants,ericzundel/pants,sid-kap/pants,qma/pants,ity/pants,kslundberg/pants,mateor/pants,mateor/pants,cevaris/pants,Gabriel439/pants,digwanderlust/pants,di0spyr0s/pants,laurentgo/pants,wisechengyi/pants,digwanderlust/pants,slyphon/pants,dbentley/pants,fkorotkov/pants,dbentley/pants,15Dkatz/pants,sid-kap/pants,kwlzn/pants,baroquebobcat/pants,twitter/pants,lahosken/pants,benjyw/pants,digwanderlust/pants,sameerparekh/pants,ericzundel/pants,ericzundel/pants,gmalmquist/pants,jsirois/pants,di0spyr0s/pants,fkorotkov/pants,UnrememberMe/pants,sameerparekh/pants,peiyuwang/pants,dturner-tw/pants,pantsbuild/pants,landism/pants,tejal29/pants,laurentgo/pants,pantsbuild/pants,megaserg/pants,pgroudas/pants,kslundberg/pants,areitz/pants,lahosken/pants,kslundberg/pants,fkorotkov/pants,lahosken/pants,dbentley/pants,kwlzn/pants,mateor/pants,scode/pants,peiyuwang/pants,jtrobec/pants,ity/pants,cevaris/pants,benjyw/pants,jtrobec/pants,kslundberg/pants,pantsbuild/pants,mateor/pants,peiyuwang/pants,square/pants,ericzundel/pants,tdyas/pants,foursquare/pants,pantsbuild/pants,pgroudas/pants,areitz/pants,sid-kap/pants,square/pants,TansyArron/pants,dbentley/pants,slyphon/pants,15Dkatz/pants,UnrememberMe/pants,TansyArron/pants,ity/pants,dturner-tw/pants,di0spyr0s/pants,wisechengyi/pants,benjyw/pants,foursquare/pants,sameerparekh/pants,peiyuwang/pants,jtrobec/pants,dturner-tw/pants,lahosken/pants,digwanderlust/pants,pombredanne/pants,15Dkatz/pants,ity/pants,megaserg/pants,cevaris/pants,TansyArron/pants,sid-kap/pants,scode/pants,pantsbuild/pants,pantsbuild/pants,peiyuwang/pants,scode/pants,manasapte/pants,landism/pants,twitter/pants,peiyuwang/pants,gmalmquist/pants,manasapte/pants,scode/pants,dturner-tw/pants,foursquare/pants,pombredanne/pants,lahosken/pants,sid-kap/pants,sameerparekh/pants,gmalmquist/pants,UnrememberMe/pants,dgomez10/xanon,foursquare/pants,sameerparekh/pants,pgroudas/pants,Gabriel439/pants,benjyw/pants,manasapte/pants,sameerparekh/pants,manasapte/pants,dgomez10/xanon,dbentley/pants,Gabriel439/pants,jessrosenfield/pants,baroquebobcat/pants,dturner-tw/pants,sameerparekh/pants,cevaris/pants,cevaris/pants,wisechengyi/pants,wisechengyi/pants,foursquare/pants,megaserg/pants,dgomez10/xanon,areitz/pants,benjyw/pants,qma/pants,baroquebobcat/pants,kwlzn/pants,sid-kap/pants,jessrosenfield/pants,dgomez10/xanon,peiyuwang/pants,TansyArron/pants,slyphon/pants,laurentgo/pants,lahosken/pants,di0spyr0s/pants,jsirois/pants,digwanderlust/pants,di0spyr0s/pants,areitz/pants,mateor/pants,qma/pants,laurentgo/pants,jessrosenfield/pants,scode/pants,dgomez10/xanon,twitter/pants,twitter/pants,twitter/pants,wisechengyi/pants,pantsbuild/pants,UnrememberMe/pants,mateor/pants,pombredanne/pants,twitter/pants,square/pants,Gabriel439/pants,megaserg/pants,TansyArron/pants,baroquebobcat/pants,kslundberg/pants,15Dkatz/pants,wisechengyi/pants,landism/pants,ericzundel/pants,slyphon/pants,baroquebobcat/pants,megaserg/pants,kslundberg/pants,ericzundel/pants,lahosken/pants,laurentgo/pants,digwanderlust/pants,tejal29/pants,tdyas/pants,sid-kap/pants,kwlzn/pants,tdyas/pants,tejal29/pants,jessrosenfield/pants,laurentgo/pants,jtrobec/pants,landism/pants,ericzundel/pants,fkorotkov/pants,wisechengyi/pants,slyphon/pants,twitter/pants,tdyas/pants,megaserg/pants,fkorotkov/pants,ity/pants,kwlzn/pants,baroquebobcat/pants,UnrememberMe/pants