Fix offset bug in the standard unicode pathway. The problem was that aStream->fontSize is only set in the alt-unicode pathway so the local variable fontSize should be used instead for calculating the text Y offset.
Fix offset bug in the standard unicode pathway. The problem was that aStream->fontSize is only set in the alt-unicode pathway so the local variable fontSize should be used instead for calculating the text Y offset.

svn path=/trunk/; revision=11798

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