math/R-cran-car: update to 2.1-1.

Changes:

• Use explicit pkg-plist instead of autoplist. Using an explicit pkg-plist is more robust against "silent" errors or changes.

ChangeLog:

• influencePlot now returns Cook's distance, not its square root.
• Anova() now supports "coxme" objects (produced by coxme() in coxme package) (request of Philipp Sprenger).
• Anova() now works via its default method with "vglm" objects produced by functions in the VGAM package; and the default method of linearHypothesis() again works with these objects (problem reported by Michael Friendly).
• Fixed Anova.coxph() so that it takes account of method (ties) argument (bug reported by Karl Ove Hufthammer).
• Improvements to Anova.default() so that a wider variety of model classes are accommodated (following request of Liviu Andronic.)
• dataEllipse() now throws an error if there are too few colors for the number of groups (fixing bug reported by Ottorino Pantani).
• spreadLevelPlot.lm() now includes an optional smoother in addition to the fitted straight line (suggestion of Michael Friendly).
• No longer import methods (as opposed to generics) directly from pbkrtest.
• Added axis.ticks argument to scatter3d() (code contributed by David Winsemius).