KWSys: Require at least CMake 2.6.3
KWSys: Require at least CMake 2.6.3

Remove code left for supporting earlier CMake versions.

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