ENH: Explicitly specify internal linkage for internal observer objects
ENH: Explicitly specify internal linkage for internal observer objects

The Observer and SubjectImplementation are internal to the
itkObject.cxx file. Explicitly specify linkage.

biotrump/ITK,stnava/ITK,PlutoniumHeart/ITK,fedral/ITK,jmerkow/ITK,heimdali/ITK,spinicist/ITK,heimdali/ITK,heimdali/ITK,blowekamp/ITK,msmolens/ITK,jcfr/ITK,biotrump/ITK,jcfr/ITK,jmerkow/ITK,atsnyder/ITK,PlutoniumHeart/ITK,heimdali/ITK,vfonov/ITK,richardbeare/ITK,malaterre/ITK,eile/ITK,richardbeare/ITK,fbudin69500/ITK,spinicist/ITK,PlutoniumHeart/ITK,msmolens/ITK,ajjl/ITK,BlueBrain/ITK,fbudin69500/ITK,jcfr/ITK,blowekamp/ITK,LucasGandel/ITK,LucasGandel/ITK,LucasGandel/ITK,eile/ITK,PlutoniumHeart/ITK,biotrump/ITK,PlutoniumHeart/ITK,BlueBrain/ITK,jcfr/ITK,fbudin69500/ITK,msmolens/ITK,jcfr/ITK,hjmjohnson/ITK,malaterre/ITK,vfonov/ITK,stnava/ITK,stnava/ITK,fedral/ITK,atsnyder/ITK,thewtex/ITK,hendradarwin/ITK,fbudin69500/ITK,blowekamp/ITK,stnava/ITK,malaterre/ITK,vfonov/ITK,richardbeare/ITK,spinicist/ITK,eile/ITK,BlueBrain/ITK,InsightSoftwareConsortium/ITK,msmolens/ITK,jmerkow/ITK,hendradarwin/ITK,vfonov/ITK,LucHermitte/ITK,zachary-williamson/ITK,ajjl/ITK,blowekamp/ITK,stnava/ITK,fbudin69500/ITK,biotrump/ITK,LucHermitte/ITK,thewtex/ITK,fedral/ITK,LucasGandel/ITK,BRAINSia/ITK,fbudin69500/ITK,InsightSoftwareConsortium/ITK,BlueBrain/ITK,spinicist/ITK,spinicist/ITK,eile/ITK,thewtex/ITK,BRAINSia/ITK,vfonov/ITK,hjmjohnson/ITK,fedral/ITK,fedral/ITK,richardbeare/ITK,vfonov/ITK,BRAINSia/ITK,BlueBrain/ITK,atsnyder/ITK,BlueBrain/ITK,stnava/ITK,atsnyder/ITK,jcfr/ITK,Kitware/ITK,fedral/ITK,Kitware/ITK,ajjl/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,heimdali/ITK,eile/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,blowekamp/ITK,PlutoniumHeart/ITK,biotrump/ITK,hendradarwin/ITK,zachary-williamson/ITK,InsightSoftwareConsortium/ITK,atsnyder/ITK,spinicist/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,jcfr/ITK,stnava/ITK,zachary-williamson/ITK,stnava/ITK,LucHermitte/ITK,atsnyder/ITK,richardbeare/ITK,spinicist/ITK,blowekamp/ITK,fbudin69500/ITK,eile/ITK,LucHermitte/ITK,jmerkow/ITK,eile/ITK,zachary-williamson/ITK,stnava/ITK,jmerkow/ITK,fbudin69500/ITK,jmerkow/ITK,BlueBrain/ITK,spinicist/ITK,hjmjohnson/ITK,LucasGandel/ITK,ajjl/ITK,vfonov/ITK,jmerkow/ITK,LucasGandel/ITK,vfonov/ITK,msmolens/ITK,blowekamp/ITK,BRAINSia/ITK,jcfr/ITK,spinicist/ITK,BRAINSia/ITK,BlueBrain/ITK,atsnyder/ITK,atsnyder/ITK,zachary-williamson/ITK,thewtex/ITK,zachary-williamson/ITK,LucHermitte/ITK,hjmjohnson/ITK,eile/ITK,malaterre/ITK,PlutoniumHeart/ITK,hjmjohnson/ITK,malaterre/ITK,malaterre/ITK,thewtex/ITK,Kitware/ITK,heimdali/ITK,LucasGandel/ITK,blowekamp/ITK,malaterre/ITK,hendradarwin/ITK,LucasGandel/ITK,hendradarwin/ITK,biotrump/ITK,zachary-williamson/ITK,heimdali/ITK,jmerkow/ITK,zachary-williamson/ITK,hjmjohnson/ITK,hendradarwin/ITK,biotrump/ITK,BRAINSia/ITK,malaterre/ITK,ajjl/ITK,LucHermitte/ITK,zachary-williamson/ITK,Kitware/ITK,eile/ITK,fedral/ITK,thewtex/ITK,msmolens/ITK,hendradarwin/ITK,hjmjohnson/ITK,hendradarwin/ITK,LucHermitte/ITK,fedral/ITK,ajjl/ITK,biotrump/ITK,heimdali/ITK,richardbeare/ITK,atsnyder/ITK,msmolens/ITK,LucHermitte/ITK,ajjl/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,PlutoniumHeart/ITK,vfonov/ITK,ajjl/ITK,Kitware/ITK,msmolens/ITK,richardbeare/ITK