Move to style which uses targets for COMMANDs for all special targets used in tests.
Move to style which uses targets for COMMANDs for all special targets
used in tests.

extXdrawable_demo depends on PLD_xcairo and not PLD_extcairo.

Add test_plplotcanvas_demo and test_plplotcanvas_animation interactive
targets.  (These complete the tests of all special targets compiled in
the c subdirectory.)


svn path=/trunk/; revision=10557

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot