KWSys: Improve SharedForward platform table
KWSys: Improve SharedForward platform table

The SharedForward header contains a preprocessor table mapping from
platform to equivalents for ldd and LD_LIBRARY_PATH.  This commit fixes
the table preprocessor directives to guarantee at most one platform.
This generalizes the commit "Fix compilation of VTK on debian/sparc".

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