Update buck
Update buck

There's nothing specifically that we need in this version, but it
includes my patch:

  Improve error messages when build target parse preconditions fail

Change-Id: I93b960fd19ee334aa95b3c27332997bec74fcd85

gcoders/gerrit,WANdisco/gerrit,pkdevbox/gerrit,dwhipstock/gerrit,Distrotech/gerrit,Seinlin/gerrit,Seinlin/gerrit,thesamet/gerrit,thinkernel/gerrit,quyixia/gerrit,renchaorevee/gerrit,renchaorevee/gerrit,thesamet/gerrit,pkdevbox/gerrit,joshuawilson/merrit,netroby/gerrit,anminhsu/gerrit,thinkernel/gerrit,joshuawilson/merrit,gcoders/gerrit,anminhsu/gerrit,Overruler/gerrit,gcoders/gerrit,Overruler/gerrit,supriyantomaftuh/gerrit,supriyantomaftuh/gerrit,hdost/gerrit,dwhipstock/gerrit,renchaorevee/gerrit,qtproject/qtqa-gerrit,gerrit-review/gerrit,jackminicloud/test,quyixia/gerrit,anminhsu/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,jackminicloud/test,jackminicloud/test,gerrit-review/gerrit,jackminicloud/test,supriyantomaftuh/gerrit,WANdisco/gerrit,quyixia/gerrit,thinkernel/gerrit,gcoders/gerrit,WANdisco/gerrit,dwhipstock/gerrit,dwhipstock/gerrit,thesamet/gerrit,TonyChai24/test,gcoders/gerrit,dwhipstock/gerrit,TonyChai24/test,Distrotech/gerrit,renchaorevee/gerrit,anminhsu/gerrit,hdost/gerrit,netroby/gerrit,hdost/gerrit,qtproject/qtqa-gerrit,hdost/gerrit,netroby/gerrit,MerritCR/merrit,MerritCR/merrit,gerrit-review/gerrit,dwhipstock/gerrit,thesamet/gerrit,thinkernel/gerrit,supriyantomaftuh/gerrit,Distrotech/gerrit,Overruler/gerrit,Distrotech/gerrit,joshuawilson/merrit,qtproject/qtqa-gerrit,pkdevbox/gerrit,GerritCodeReview/gerrit,netroby/gerrit,joshuawilson/merrit,Seinlin/gerrit,TonyChai24/test,Seinlin/gerrit,TonyChai24/test,anminhsu/gerrit,joshuawilson/merrit,anminhsu/gerrit,gcoders/gerrit,GerritCodeReview/gerrit,Distrotech/gerrit,gcoders/gerrit,netroby/gerrit,hdost/gerrit,pkdevbox/gerrit,jackminicloud/test,qtproject/qtqa-gerrit,Distrotech/gerrit,dwhipstock/gerrit,MerritCR/merrit,MerritCR/merrit,GerritCodeReview/gerrit,supriyantomaftuh/gerrit,MerritCR/merrit,qtproject/qtqa-gerrit,supriyantomaftuh/gerrit,gerrit-review/gerrit,netroby/gerrit,pkdevbox/gerrit,pkdevbox/gerrit,gerrit-review/gerrit,WANdisco/gerrit,thinkernel/gerrit,Overruler/gerrit,anminhsu/gerrit,Distrotech/gerrit,renchaorevee/gerrit,qtproject/qtqa-gerrit,thinkernel/gerrit,supriyantomaftuh/gerrit,hdost/gerrit,renchaorevee/gerrit,thesamet/gerrit,joshuawilson/merrit,quyixia/gerrit,gerrit-review/gerrit,Overruler/gerrit,MerritCR/merrit,joshuawilson/merrit,TonyChai24/test,quyixia/gerrit,gerrit-review/gerrit,joshuawilson/merrit,TonyChai24/test,hdost/gerrit,Seinlin/gerrit,jackminicloud/test,WANdisco/gerrit,pkdevbox/gerrit,WANdisco/gerrit,thesamet/gerrit,TonyChai24/test,GerritCodeReview/gerrit,quyixia/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,MerritCR/merrit,renchaorevee/gerrit,thinkernel/gerrit,netroby/gerrit,Seinlin/gerrit,WANdisco/gerrit,Overruler/gerrit,thesamet/gerrit,MerritCR/merrit,qtproject/qtqa-gerrit,quyixia/gerrit,Seinlin/gerrit,jackminicloud/test