AbstractDerivedCRS changes for revisions 12213:12215

This commit is partially a revert of commit 10796 (which we reverted in the whole code base anyway), and a change in a constant name. That constant has an other name and location in Apache SIS.

Command line:

svn diff --extensions "--unified --ignore-space-change --ignore-all-space --ignore-eol-style" -r12213:12215 https://svn.osgeo.org/geotools/trunk/modules/library/referencing/src/main/java/org/geotools/referencing/crs/AbstractDerivedCRS.java
Revision 12213Revision 12215
/*
 * Geotools 2 - OpenSource mapping toolkit
 * (C) 2003, Geotools Project Managment Committee (PMC)
 * (C) 2003, Institut de Recherche pour le Développement
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 
/*
 * Geotools 2 - OpenSource mapping toolkit
 * (C) 2003, Geotools Project Managment Committee (PMC)
 * (C) 2003, Institut de Recherche pour le D�veloppement
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *       because {@link org.geotools.referencing.operation.CoordinateOperation} lives in
 *       a different package.
 */
public static IdentifiedObject \u00A4COMPARING;

/**
 * The base coordinate reference system.
 
 *       because {@link org.geotools.referencing.operation.CoordinateOperation} lives in
 *       a different package.
 */
public static IdentifiedObject COMPARING;

/**
 * The base coordinate reference system.
     * from the CoordinateOperation super-class) that is set to this GeneralDerivedCRS.
     */
    synchronized (GeneralDerivedCRS.class) {
        if (\u00A4COMPARING != null) {
            // NOTE: the following assertion fails for deserialized objects.
            // assert \u00A4COMPARING == conversionFromBase;
            return true;
        }
        try {
            \u00A4COMPARING = this;
            return equals(this.conversionFromBase,
                          that.conversionFromBase,
                          compareMetadata);
        } finally {
            \u00A4COMPARING = null;
        }
    }
}
 
     * from the CoordinateOperation super-class) that is set to this GeneralDerivedCRS.
     */
    synchronized (GeneralDerivedCRS.class) {
        if (COMPARING != null) {
            // NOTE: the following assertion fails for deserialized objects.
            // assert \u00A4COMPARING == conversionFromBase;
            return true;
        }
        try {
            COMPARING = this;
            return equals(this.conversionFromBase,
                          that.conversionFromBase,
                          compareMetadata);
        } finally {
            COMPARING = null;
        }
    }
}