doxygen: include the svn logo at the top of generated documentation pages.
doxygen: include the svn logo at the top of generated documentation pages.

Review by: julianf

* doc/svn-square.jpg:
    New file.  Alias to site/publish/images/svn-square.jpg, via svn:externals.

* doc/doxygen.conf
  (PROJECT_LOGO): Set to the square logo (was unset).

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1663837 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion