Graphviz: Restore support for per-target dependency graph options
The behaviors controlled by options GRAPHVIZ_GENERATE_PER_TARGET
and
GRAPHVIZ_GENERATE_DEPENDERS
were broken by !3766 (merged).
It had not been covered in the test suite previously, and those changes
left out checks for these features from the default_options
case.
Implement the previously-existing behavior in the new graphviz generation engine added by the above-mentioned MR. Add the corresponding checks to the existing test case.
Fixes: #20928 (closed)
Backport: release:HEAD^2
Topic-rename: graphviz-restore-per-target
Edited by Brad King