ENH: For static libs, always mark with default visibility (#ITK-2660)
ENH: For static libs, always mark with default visibility (#ITK-2660)

If ITKCommon is build as a static library with -fvisibility=hidden using
gcc >= 4, exported symbols must be marked with default visibility to
avoid "different visiblity" warnings when linking ITKCommon from a DSO
which is build with default visibility.

Change-Id: Ieec10ca806431aa10e4ed25f187d8609a3c4dc29

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