Review GMT's known failures

[github-actions]

The following tests are marked as GMT_KNOWN_FAILURE and need review:

• test/genper/gridlines2.sh
• test/gmtmex/WL_example_3.sh
• test/grdcontour/periodic.sh
• test/grdvector/met_uv.sh
• test/grdview/wrap.sh
• test/greenspline/gspline_5.sh
• test/mgd77/test_cm4.sh
• test/psbasemap/poption.sh
• test/psbasemap/rotalign.sh
• test/pscoast/pseudo.sh
• test/psxy/clipping4.sh
• test/psxy/clipping5.sh
• test/psxy/clipping6.sh
• test/psxy/nearpole.sh
• test/psxy/nojump.sh
• test/psxy/wrapper.sh
• doc/scripts/GMT_movie_progress.sh