-Dorg.geotools.referencing.forceXY=true makes CRS.decode fail
-------------------------------------------------------------

                 Key: GEOT-1262
                 URL: http://jira.codehaus.org/browse/GEOT-1262
             Project: GeoTools
          Issue Type: Bug
          Components: core referencing
    Affects Versions: 2.4.M2, 2.3.1
            Reporter: Andrea Aime
            Assignee: Martin Desruisseaux
            Priority: Critical


 CRS.decode("EPSG:4326") fails with -Dorg.geotools.referencing.forceXY=true

On 2.3.x it happens the same apparently. LongitudeFirstFactory is picked up by 
FactoryRegistry,
but then isAcceptable returns false because the expected hints are not 
satisfied. In particular
I extended LongitudFirstFactory.put to accept a default value, and then set 
default values in the constructor:

public LongitudeFirstFactory(final Hints hints) {
        super(hints, DefaultFactory.PRIORITY + relativePriority());
        put(null,  Hints.FORCE_LONGITUDE_FIRST_AXIS_ORDER, Boolean.TRUE);
        put(hints, Hints.FORCE_STANDARD_AXIS_DIRECTIONS, Boolean.FALSE);
        put(hints, Hints.FORCE_STANDARD_AXIS_UNITS, Boolean.FALSE);
    }

    /**
     * Stores a value from the specified hints.
     */
    private void put(final Hints source, final Hints.Key key, final Boolean 
defaultValue) {
        Object value;
        if (source != null) {
            value = source.get(key);
            if (value == null) {
                value = defaultValue;
            }
        } else {
            value = defaultValue;
        }
        hints.put(key, value);
    }

I haven't checked trunk, but I suspect the issue is the same.

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