Bug 206603 Table column is not rendered in pdf if its width is set in ems
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
if(w==null)
					{
						columns[i] = null;
					}
					else
					{
						columns[i] = new DimensionType(w.getMeasure(), w.getUnits());
						
					}
				}
			}
			if ( startCol < 0 )
				startCol = 0;
			if ( endCol < 0 )
				endCol = 0;
			
			int specifiedWidth = getDimensionValue( tableContent.getWidth( ), maxWidth );
			int tableWidth;
			if(specifiedWidth>0)
			{
				tableWidth = specifiedWidth;
			}
			else
			{
				tableWidth = maxWidth;
			}
			formalize(columns, tableWidth);
			return resolve(tableWidth, columns);
		}