Update graphics/pfstools to version 1.6.4_16
Update graphics/pstoedit to version 3.62_3
Update math/plplot to version 5.10.0_3
Update graphics/gimp-app to version 2.8.10_3,1
Update graphics/py-gimp to version 2.8.10_2
Update graphics/p5-SpringGraph to version 0.05_7
Update graphics/enblend to version 4.1.1_8