Changed to new "merged" style of option table parsing.  Rewired command line handling so that now any number of metafiles may be specified (note: driver is reinitialized with each file, however).  Options now only apply to files they precede on the command line.  Help and usage messages changed accordingly.  Bug fix: the background color specified from the command line now properly overrides the setting in the metafile header (color changes in the body of the metafile not affected).
Changed to new "merged" style of option table parsing.  Rewired command
line handling so that now any number of metafiles may be specified (note:
driver is reinitialized with each file, however).  Options now only apply
to files they precede on the command line.  Help and usage messages
changed accordingly.  Bug fix: the background color specified from the
command line now properly overrides the setting in the metafile header
(color changes in the body of the metafile not affected).

svn path=/trunk/; revision=1416

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