local: use the packbuilder to push
local: use the packbuilder to push

Instead of copying each object individually, as we'd been doing, use the
packbuilder which should be faster and give us some feedback.

While performing this change, we can hook up the packbuilder's writing
to the push progress so the caller knows how far along we are.

sygool/libgit2,oaastest/libgit2,Tousiph/Demo1,mrksrm/Mingijura,sim0629/libgit2,stewid/libgit2,linquize/libgit2,yosefhackmon/libgit2,nokiddin/libgit2,claudelee/libgit2,claudelee/libgit2,mrksrm/Mingijura,falqas/libgit2,kissthink/libgit2,t0xicCode/libgit2,iankronquist/libgit2,yongthecoder/libgit2,skabel/manguse,mcanthony/libgit2,kissthink/libgit2,t0xicCode/libgit2,yongthecoder/libgit2,t0xicCode/libgit2,amyvmiwei/libgit2,leoyanggit/libgit2,mingyaaaa/libgit2,dleehr/libgit2,mrksrm/Mingijura,leoyanggit/libgit2,mrksrm/Mingijura,amyvmiwei/libgit2,mcanthony/libgit2,KTXSoftware/libgit2,joshtriplett/libgit2,KTXSoftware/libgit2,MrHacky/libgit2,amyvmiwei/libgit2,Corillian/libgit2,saurabhsuniljain/libgit2,kenprice/libgit2,nokiddin/libgit2,mingyaaaa/libgit2,leoyanggit/libgit2,JIghtuse/libgit2,yosefhackmon/libgit2,JIghtuse/libgit2,sygool/libgit2,sygool/libgit2,iankronquist/libgit2,stewid/libgit2,Tousiph/Demo1,mhp/libgit2,mcanthony/libgit2,joshtriplett/libgit2,sim0629/libgit2,claudelee/libgit2,leoyanggit/libgit2,saurabhsuniljain/libgit2,joshtriplett/libgit2,kissthink/libgit2,sim0629/libgit2,since2014/libgit2,JIghtuse/libgit2,dleehr/libgit2,MrHacky/libgit2,kissthink/libgit2,saurabhsuniljain/libgit2,jeffhostetler/public_libgit2,sim0629/libgit2,MrHacky/libgit2,sim0629/libgit2,yosefhackmon/libgit2,leoyanggit/libgit2,falqas/libgit2,spraints/libgit2,jeffhostetler/public_libgit2,JIghtuse/libgit2,linquize/libgit2,iankronquist/libgit2,Tousiph/Demo1,falqas/libgit2,iankronquist/libgit2,KTXSoftware/libgit2,Corillian/libgit2,jeffhostetler/public_libgit2,sygool/libgit2,Corillian/libgit2,skabel/manguse,claudelee/libgit2,mhp/libgit2,saurabhsuniljain/libgit2,mhp/libgit2,ardumont/libgit2,JIghtuse/libgit2,claudelee/libgit2,magnus98/TEST,KTXSoftware/libgit2,claudelee/libgit2,KTXSoftware/libgit2,kenprice/libgit2,jeffhostetler/public_libgit2,yosefhackmon/libgit2,oaastest/libgit2,yosefhackmon/libgit2,spraints/libgit2,ardumont/libgit2,stewid/libgit2,yosefhackmon/libgit2,mrksrm/Mingijura,t0xicCode/libgit2,kissthink/libgit2,t0xicCode/libgit2,mcanthony/libgit2,leoyanggit/libgit2,saurabhsuniljain/libgit2,KTXSoftware/libgit2,Tousiph/Demo1,mingyaaaa/libgit2,yongthecoder/libgit2,Corillian/libgit2,iankronquist/libgit2,kissthink/libgit2,oaastest/libgit2,stewid/libgit2,falqas/libgit2,dleehr/libgit2,spraints/libgit2,amyvmiwei/libgit2,stewid/libgit2,oaastest/libgit2,oaastest/libgit2,Corillian/libgit2,oaastest/libgit2,Tousiph/Demo1,mhp/libgit2,mingyaaaa/libgit2,magnus98/TEST,linquize/libgit2,MrHacky/libgit2,kenprice/libgit2,amyvmiwei/libgit2,since2014/libgit2,kenprice/libgit2,stewid/libgit2,t0xicCode/libgit2,magnus98/TEST,dleehr/libgit2,falqas/libgit2,nokiddin/libgit2,MrHacky/libgit2,Tousiph/Demo1,mhp/libgit2,mhp/libgit2,Corillian/libgit2,mingyaaaa/libgit2,iankronquist/libgit2,joshtriplett/libgit2,magnus98/TEST,skabel/manguse,yongthecoder/libgit2,sim0629/libgit2,kenprice/libgit2,spraints/libgit2,yongthecoder/libgit2,nokiddin/libgit2,jeffhostetler/public_libgit2,sygool/libgit2,since2014/libgit2,MrHacky/libgit2,magnus98/TEST,linquize/libgit2,spraints/libgit2,ardumont/libgit2,skabel/manguse,nokiddin/libgit2,nokiddin/libgit2,mrksrm/Mingijura,jeffhostetler/public_libgit2,joshtriplett/libgit2,dleehr/libgit2,skabel/manguse,mcanthony/libgit2,ardumont/libgit2,yongthecoder/libgit2,ardumont/libgit2,linquize/libgit2,since2014/libgit2,mingyaaaa/libgit2,skabel/manguse,linquize/libgit2,since2014/libgit2,JIghtuse/libgit2,joshtriplett/libgit2,sygool/libgit2,spraints/libgit2,falqas/libgit2,magnus98/TEST,mcanthony/libgit2,dleehr/libgit2,kenprice/libgit2,since2014/libgit2,amyvmiwei/libgit2,ardumont/libgit2,saurabhsuniljain/libgit2