Bug 153853 [Regression]The bound column names must be unique within the entire table.
Regression case Regression_136421(under org.eclipse.birt.report.tests.model) failed. Expected result: Model will avoid adding a duplicate bound column name within a table.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
return getFilteredStructureList( SCRIPTLIBS_PROP,
				ScriptLib.SCRIPTLIB_NAME_MEMBER );
	}
	/**
	 * Gets script lib though name
	 * 
	 * @param name
	 *            name of script lib
	 * @return script lib
	 */
	public ScriptLib findScriptLib( String name )
	{
		List scriptLibs = getListProperty( SCRIPTLIBS_PROP );
		for ( int i = 0; scriptLibs != null && i < scriptLibs.size( ); ++i )
		{
			ScriptLib scriptLib = (ScriptLib) scriptLibs.get( i );
			if ( scriptLib.getName( ).equals( name ) )
			{
				return scriptLib;
			}
		}
		return null;
	}
	/**
	 * Shifts jar file from source position to destination position.
	 * 
	 * @param sourceIndex
	 *            source position
	 * @param destIndex
	 *            destination position