[PATCH] sphinx-pre-install: check for the need of graphviz-gd

On newer versions of graphviz, it is needed to install a separate package for PDF support. Signed-off-by: Mauro Carvalho Chehab --- This patch depends on a previous patch series I sent yesterday. This, together with the other pending patches are available at:

[PATCH] sphinx-pre-install: check for the need of graphviz-gd

On newer versions of graphviz, it is needed to install a separate package for PDF support. Signed-off-by: Mauro Carvalho Chehab --- This patch depends on a previous patch series I sent yesterday. This, together with the other pending patches are available at: