Bug 210496 Add hasStyle property in reportItemModel extension point
When chart gets reportItem's properties by extending ReportItem, style properties are null. Hence, model needs to add hasStyle property in reportItemModel extension point
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementDefn.java
void setSelector( String value )
	{
		selector = value;
	}
	/**
	 * Sets the "extends" attribute.
	 * 
	 * @param base
	 *            The name of the element type which this element extends.
	 */
	void setExtends( String base )
	{
		assert !isBuilt;
		extendsFrom = base;
	}
	/**
	 * Sets the "supports user properties" attribute.
	 * 
	 * @param flag
	 *            True if the element allows user-defined properties, false
	 *            otherwise.
	 */
	void setSupportsUserProperties( boolean flag )
	{
		assert !isBuilt;
		supportsUserProperties = flag;
	}
	/**
	 * Gets the name of the parent element, if any. The parent element is the
	 * one that this element extends.