While building Slicer on Windows 7 behind a firewall with Slicer_USE_GIT_PROTOCOL turned off, ITKv3 fails to move to the build stage because the submodule points to an address using a git protocol and not an http protocol.

Error message from MSVC 2010:

Note: checking out 'dcd655f89c'.
2>
2> You are in 'detached HEAD' state. You can look around, make experimental
2> changes and commit them, and you can discard any commits you make in this
2> state without impacting any branches by performing another checkout.
2>
2> If you want to create a new branch to retain commits you create, you may
2> do so (now or later) by using -b with the checkout command again. Example:
2>
2> git checkout -b new_branch_name
2>
2> HEAD is now at dcd655f... Merge branch 'metaTubeReader' into release-3.20
2> Submodule 'Andrew Wiles' (git://itk.org/ITKData.git) registered for path 'Testing/Data'
2> Cloning into 'Testing/Data'...
2> fatal: unable to connect to itk.org:
2> itk.org[0: 66.194.253.19]: errno=No error
2>
2> Clone of 'git://itk.org/ITKData.git' into submodule path 'Testing/Data' failed
2> CMake Error at ITKv3-prefix/tmp/ITKv3-gitclone.cmake:57 (message):
2> Failed to update submodules in: 'D:/src/Slicer4/SlicerBuild-Debug/ITKv3'

If I do a git submodule init on a separate clone I get:

$ git submodule init
Submodule 'Testing/Data' (git://itk.org/ITKData.git) registered for path 'Testin
g/Data'

Obviously, with Slicer_USE_GIT_PROTOCOL turned off, the above submodule should point to an http address. Is this a Slicer or ITK issue?