Provides some convenience behavior for flipping sides in column
specifications, arrays of column specifications and encoded column specs.
Credit to Karsten Lentzsch of JGoodies for the foundation code for this
utility class. For further information see his example entitled
"Build panels component orientation: left-to-right vs. right-to-left" author: Todd Viegut since: Abeille 2.1 version: 1.0, 06.24.2007