ENH: Teach "git gerrit-push" script to push data with topic
ENH: Teach "git gerrit-push" script to push data with topic

Identify ExternalData content links added or modified by commits in the
topic to be pushed.  Convert those that are referenced by refs/data/*
into a commit object and push it to refs/data/commits/$commit in Gerrit.
This approach uploads data needed for a topic through the same
connection used to push the topic.  A separate tool will fetch the data
commit from Gerrit, extract the data blobs from it, and publish them in
a location accessible to clients using the ExternalData CMake module.

fuentesdt/InsightToolkit-dev,eile/ITK,thewtex/ITK,hendradarwin/ITK,fuentesdt/InsightToolkit-dev,InsightSoftwareConsortium/ITK,malaterre/ITK,BRAINSia/ITK,jcfr/ITK,heimdali/ITK,biotrump/ITK,hendradarwin/ITK,ajjl/ITK,PlutoniumHeart/ITK,blowekamp/ITK,fedral/ITK,itkvideo/ITK,zachary-williamson/ITK,msmolens/ITK,hjmjohnson/ITK,spinicist/ITK,spinicist/ITK,thewtex/ITK,fbudin69500/ITK,BRAINSia/ITK,jcfr/ITK,rhgong/itk-with-dom,malaterre/ITK,wkjeong/ITK,LucHermitte/ITK,stnava/ITK,jcfr/ITK,malaterre/ITK,hinerm/ITK,malaterre/ITK,fedral/ITK,zachary-williamson/ITK,zachary-williamson/ITK,biotrump/ITK,fuentesdt/InsightToolkit-dev,BlueBrain/ITK,BlueBrain/ITK,paulnovo/ITK,hinerm/ITK,jmerkow/ITK,spinicist/ITK,PlutoniumHeart/ITK,cpatrick/ITK-RemoteIO,Kitware/ITK,CapeDrew/DCMTK-ITK,Kitware/ITK,fedral/ITK,thewtex/ITK,itkvideo/ITK,itkvideo/ITK,vfonov/ITK,msmolens/ITK,vfonov/ITK,LucasGandel/ITK,ajjl/ITK,itkvideo/ITK,GEHC-Surgery/ITK,fedral/ITK,CapeDrew/DCMTK-ITK,LucHermitte/ITK,cpatrick/ITK-RemoteIO,fuentesdt/InsightToolkit-dev,CapeDrew/DCMTK-ITK,paulnovo/ITK,BlueBrain/ITK,zachary-williamson/ITK,biotrump/ITK,malaterre/ITK,msmolens/ITK,fuentesdt/InsightToolkit-dev,PlutoniumHeart/ITK,PlutoniumHeart/ITK,zachary-williamson/ITK,rhgong/itk-with-dom,stnava/ITK,richardbeare/ITK,wkjeong/ITK,atsnyder/ITK,fedral/ITK,fedral/ITK,BlueBrain/ITK,fuentesdt/InsightToolkit-dev,msmolens/ITK,paulnovo/ITK,jmerkow/ITK,ajjl/ITK,CapeDrew/DCMTK-ITK,msmolens/ITK,biotrump/ITK,itkvideo/ITK,atsnyder/ITK,vfonov/ITK,malaterre/ITK,atsnyder/ITK,stnava/ITK,GEHC-Surgery/ITK,fbudin69500/ITK,msmolens/ITK,itkvideo/ITK,biotrump/ITK,itkvideo/ITK,heimdali/ITK,blowekamp/ITK,hendradarwin/ITK,jcfr/ITK,spinicist/ITK,BRAINSia/ITK,stnava/ITK,spinicist/ITK,jcfr/ITK,jmerkow/ITK,richardbeare/ITK,atsnyder/ITK,InsightSoftwareConsortium/ITK,jcfr/ITK,fuentesdt/InsightToolkit-dev,cpatrick/ITK-RemoteIO,atsnyder/ITK,atsnyder/ITK,vfonov/ITK,hendradarwin/ITK,msmolens/ITK,eile/ITK,vfonov/ITK,stnava/ITK,CapeDrew/DCMTK-ITK,eile/ITK,GEHC-Surgery/ITK,GEHC-Surgery/ITK,PlutoniumHeart/ITK,biotrump/ITK,hinerm/ITK,ajjl/ITK,hjmjohnson/ITK,hinerm/ITK,stnava/ITK,cpatrick/ITK-RemoteIO,cpatrick/ITK-RemoteIO,jcfr/ITK,fbudin69500/ITK,LucHermitte/ITK,blowekamp/ITK,malaterre/ITK,cpatrick/ITK-RemoteIO,LucasGandel/ITK,fedral/ITK,wkjeong/ITK,CapeDrew/DCMTK-ITK,LucasGandel/ITK,itkvideo/ITK,fbudin69500/ITK,richardbeare/ITK,heimdali/ITK,hjmjohnson/ITK,rhgong/itk-with-dom,blowekamp/ITK,msmolens/ITK,jcfr/ITK,paulnovo/ITK,BRAINSia/ITK,hinerm/ITK,hendradarwin/ITK,eile/ITK,CapeDrew/DCMTK-ITK,LucHermitte/ITK,stnava/ITK,wkjeong/ITK,Kitware/ITK,wkjeong/ITK,LucasGandel/ITK,eile/ITK,jmerkow/ITK,cpatrick/ITK-RemoteIO,BlueBrain/ITK,ajjl/ITK,Kitware/ITK,thewtex/ITK,hinerm/ITK,richardbeare/ITK,hendradarwin/ITK,richardbeare/ITK,blowekamp/ITK,cpatrick/ITK-RemoteIO,jmerkow/ITK,rhgong/itk-with-dom,atsnyder/ITK,LucHermitte/ITK,jmerkow/ITK,InsightSoftwareConsortium/ITK,ajjl/ITK,CapeDrew/DCMTK-ITK,zachary-williamson/ITK,eile/ITK,LucHermitte/ITK,rhgong/itk-with-dom,blowekamp/ITK,InsightSoftwareConsortium/ITK,LucasGandel/ITK,richardbeare/ITK,BRAINSia/ITK,heimdali/ITK,eile/ITK,GEHC-Surgery/ITK,thewtex/ITK,BlueBrain/ITK,spinicist/ITK,richardbeare/ITK,paulnovo/ITK,CapeDrew/DCMTK-ITK,wkjeong/ITK,paulnovo/ITK,zachary-williamson/ITK,vfonov/ITK,hinerm/ITK,zachary-williamson/ITK,hinerm/ITK,hjmjohnson/ITK,PlutoniumHeart/ITK,ajjl/ITK,fuentesdt/InsightToolkit-dev,spinicist/ITK,atsnyder/ITK,LucasGandel/ITK,jmerkow/ITK,vfonov/ITK,fbudin69500/ITK,PlutoniumHeart/ITK,rhgong/itk-with-dom,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,heimdali/ITK,paulnovo/ITK,BlueBrain/ITK,blowekamp/ITK,atsnyder/ITK,eile/ITK,thewtex/ITK,ajjl/ITK,spinicist/ITK,stnava/ITK,eile/ITK,BRAINSia/ITK,wkjeong/ITK,heimdali/ITK,fbudin69500/ITK,PlutoniumHeart/ITK,fbudin69500/ITK,hjmjohnson/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,GEHC-Surgery/ITK,biotrump/ITK,LucHermitte/ITK,itkvideo/ITK,heimdali/ITK,Kitware/ITK,hjmjohnson/ITK,zachary-williamson/ITK,biotrump/ITK,vfonov/ITK,LucasGandel/ITK,malaterre/ITK,hendradarwin/ITK,GEHC-Surgery/ITK,spinicist/ITK,fbudin69500/ITK,malaterre/ITK,heimdali/ITK,blowekamp/ITK,vfonov/ITK,rhgong/itk-with-dom,rhgong/itk-with-dom,fuentesdt/InsightToolkit-dev,LucHermitte/ITK,Kitware/ITK,stnava/ITK,thewtex/ITK,paulnovo/ITK,BlueBrain/ITK,LucasGandel/ITK,jmerkow/ITK,fedral/ITK,hendradarwin/ITK,BRAINSia/ITK,wkjeong/ITK,GEHC-Surgery/ITK,hinerm/ITK