tests: disable the negative image test since this makes it hard to run the tests against older mapnik versions that do not have the fix
iwyu
use pixfmt pre for the sake of clarity
iwyu
iwyu
deal with various -Wunused-parameter warnings that are not importatn
use pixfmt pre for the sake of clarity
iwyu
remove dead code and iwyu
code cleanup
deal with various -Wunused-parameter warnings that are not important
iwyu
make it possible to disable compilation of grid_renderer - closes #1962