[PATCH, WWWDOCS] Document AArch64-4.7 branch

[Sofiane Naci]

Hi,

This patch documents the AArch64-4.7 branch in wwwdocs/htdocs/svn.html.
OK?

Thanks
Sofiane

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Proposed ChangeLog:

        * htdocs/svn.html: Document aarch64-4.7 branch.

aarch64-4.7-branch-wwwdocs.patch
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