Bugs revision fd7d9bd3 
1Bugs found with xbench
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3Lines, FillStyle Solid, Planemask 0, LineWidth 0 - draws lines anyways.
4  other FillStyles work correctly.
5Rectangles - same problem.
6Filled Rectangles, FillStyle other than OpaqueStippled, Planemask 0 - draws
7  rectangles anyways.
8  OpaqueStippled works fine.
9Dashed Lines - sometimes hangs.
10  only happens when lots of lines/short dashes/long lines.
11Lines, Function equiv, LineWidth > 1 - copies instead of equiving.
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