Changed the driver to use the new core function plRotationShear to get the rotation angle and the shear angle to apply to the text.
Changed the driver to use the new core function plRotationShear to get the rotation angle and the shear angle to apply to the text.

svn path=/trunk/; revision=7454

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