ENH: ExternalData: Add "-stamp" suffix to build outputs
ENH: ExternalData: Add "-stamp" suffix to build outputs

We use stamp files as custom command outputs in the build tree to track
what objects are represented by the corresponding real data files or
links.  They contain the object hash just like content links in the
source tree.  Add "-stamp" to the end of their names to distinguish them
from content links.

Change-Id: I201bf22c06e4b79f185ef528c29eab4c53ce6876

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