Update math/R-cran-car to version 2.0.20
Update devel/R-cran-caTools to version 1.17
Update devel/R-cran-gtools to version 3.4.0
Update astro/xplanet to version 1.3.0_4
Update converters/R-cran-RJSONIO to version 1.2.0.2
Update x11-themes/lxde-icon-theme to version 0.5.0_1