ENH: Turn bridge modules off by default.
ENH: Turn bridge modules off by default.

When a bridge module requires system installed third party
libraires (the module contains itk-module-init.cmake in the module dir),
it should by default be turned off even when its corresponding group
build option is ON.

For example, when ITKGroup_Video is ON, ITKBridgeOpenCV and
ITKBridgeVXL should not be included in the build system, unless users
manually turn them on via the corresponding module option: Module_ITKBridge[VXL/OpenCV].

Change-Id: Ib17ab13e396c967873bd816a4b30a6d8584a5bdd

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