Change plgridd.c to downgrade plabort to plwarn if QHULL or CSA support is missing when regridding data. Also fall back to using Nearest Neighbors "Around" Inverse Distance Weighted in these cases since it requires no extra libraries or data. At least the program will produce _something_ then.
Change plgridd.c to downgrade plabort to plwarn if QHULL or CSA support
is missing when regridding data. Also fall back to using Nearest
Neighbors "Around" Inverse Distance Weighted in these cases since it
requires no extra libraries or data. At least the program will produce
_something_ then.

svn path=/trunk/; revision=5755

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