Bug 447918  add missing line styles

Add support for TraceType.DASHDOT_LINE, TraceType.DASHDOTDOT_LINE and
TraceType.DOT_LINE which will draw the line or polyline for a Trace in the
SWT.LINE_DASHDOT, SWT.LINE_DASHDOTDOT and SWT.LINE_DOT styles respectively.

Signed-off-by: Gertjan Zwartjes <gertjan.zwartjes@asml.com>