problem with NZMG in GeoTiffMetadata2CRSAdapter.java
----------------------------------------------------

                 Key: GEOT-2663
                 URL: http://jira.codehaus.org/browse/GEOT-2663
             Project: GeoTools
          Issue Type: Bug
          Components: gc geotiff
    Affects Versions: 2.4.2
            Reporter: Niels Hoffmann


There is an error in GeoTiffMetadata2CRSAdapter.java 
The semi-major and semi-minor axis are not part of the projection, but the 
spheroid. 
The getoriginLat and getoriginLon values are assigned twice, the first 2 should 
be deleted as shown below.

/**
                         * 
                         * New Zealand Map Grid
                         * 
                         */
                        if (name.equalsIgnoreCase("New_Zealand_Map_Grid") || 
code == GeoTiffCoordinateTransformationsCodes.CT_NewZealandMapGrid) {
                                parameters = mtFactory
                                                
.getDefaultParameters("New_Zealand_Map_Grid");

                                //parameters.parameter("semi_major").setValue(
                                //              getOriginLat(metadata));
                                //parameters.parameter("semi_minor").setValue(
                                //              getOriginLong(metadata));
                                
parameters.parameter("latitude_of_origin").setValue(
                                                this.getOriginLat(metadata));
                                
parameters.parameter("central_meridian").setValue(
                                                getOriginLong(metadata));
                                parameters.parameter("false_easting").setValue(
                                                getFalseEasting(metadata));
                                parameters.parameter("false_northing").setValue(
                                                getFalseNorthing(metadata));

                                return parameters;
                        }


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