[CMake] Patch for Sphinx warning message

[Andrew Maclean]

No worries, I should have wiped my build  directory before testing too.
On 15 Jul 2015 11:54 pm, "Brad King" <brad.king at kitware.com> wrote:

> On 07/14/2015 01:13 PM, Brad King wrote:
> > Applied with slight tweaks:
> >  Utilities/Sphinx: Use 'classic' theme for Sphinx >= 1.3
> >  http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=e59a7d7e
> [snip]
> On 07/14/2015 06:56 PM, Andrew Maclean wrote:
> > Thanks, that looks much better than what I did!
>
> I had to revert it because other places in the sphinx config
> reference 'default':
>
>  $ git grep -E 'default\>' -- Utilities/Sphinx/
>  Utilities/Sphinx/apply_qthelp_css_workaround.cmake:file(READ
> "${CSS_DIR}/default.css" DefaultCssContent)
>  Utilities/Sphinx/apply_qthelp_css_workaround.cmake:  "@import
> url(\"default.css\")" "${DefaultCssContent}"
>  Utilities/Sphinx/conf.py.in:html_theme = 'default'
>  Utilities/Sphinx/static/cmake.css:@import url("default.css");
>
> The change above only worked in local testing because some files
> were left around in the build tree from the old configuration.
>
> Switching the theme name to 'classic' while still being compatible
> with Sphinx <= 1.2 would require a dedicated effort to make the
> entire static/ directory and other supporting scripts all configured
> based on the Sphinx version.
>
> It looks like even sphinx upstream has dropped the warning:
>
>  theming: do not warn if theme is "default"
>
> https://github.com/sphinx-doc/sphinx/commit/034c4e942451fad40350ae3bb3beda6c63a49064
>
> -Brad
>
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