ZoomPane changes for revisions 5618:6057

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Command line:

svn diff --extensions "--unified --ignore-space-change --ignore-all-space --ignore-eol-style" -r5618:6057 https://svn.osgeo.org/geotools/trunk/modules/extension/widgets-swing/src/main/java/org/geotools/gui/swing/ZoomPane.java
Revision 5618Revision 6057