Introduction of getInfo

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These info classes will be moved into org.geotools.data as part of the proposal (see This is NOT catalog above).

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1. Move catalog stuff out of the way to an unsupported/module to prevent confusion
2. Add org.geotools.data.ServiceInfo and org.geotools.data.ResourceInfo (remove a few stray getTile methods)
3. Add getInfo methods to WFSDataStore for gabriel to review
4. Add getInfo methods to ShapefileDataSTore for Jesse to review
5. Add getInfo method to AbstractGridCoverage2DReader
6. Add getInfo method to DataStore and stub at the AbstractDataStore, JDBCDataStore, ContentDataStore, Implement for stand alone implementations like ArcSDE
7. Take  Take the best of geotools or udig getInfo code as the implementation
8. Cut  Cut over uDig to use this code as the final sanity check
   This was done to communicate WFS GetCapabilities information 
9. Provide an example use in the user guide

API Changes

BEFORE

package org.geotools.catalog;
interface ServiceInfo {
   ...
}

package org.geotools.catalog;
interface GeoResourceInfo {
   ...
}

...

Move ServiceInfo to org.geotools.data.ServiceInfo

package org.geotools.data;
interface ServiceInfo {
   String getTitle();
   String getDescription();
   Icon getIcon();
   Set<String> getKeywords();
   URI getPublisher();
   URI getSchema();
   URI getSource();
}

Move GeoResourceInfo to org.geotools.data.ResourceInfo:

package org.geotools.data;
interface ResourceInfo {
  // Dublin Core
  String getName();
  String getTitle();
  String getDescription();
  Icon getIcon();
  Set<String> getKeywords();
  URI getSchema();

  // And a little bit more
  ReferencedEnvelope getBounds();
  CoordinateReferenceSystem getCRS();
}

ServiceInfo can be accessed from DataStore:

import org.geotools.data.ServiceInfo;
interface DataStore {
    ServiceInfo getInfo();
}

ResourceInfo can be accessed from FeatureSource:

import org.geotools.data.ResourceInfo;
interface FeatureSource {
    ResourceInfo getInfo();
}

ServiceInfo and ResourceInfo can be accessed from AbstractGridCoverageReader2DReader:

import org.geotools.data.ServiceInfo;
import org.geotools.data.ResourceInfo;
interface AbstractGridCoverageReader2DReader{
   ServiceInfo getInfo();
   ResourceInfo getInfo( String subname );
}

ServiceInfo and ResourceInfo can be accessed from WebMapServer:

class WebMapServer extends AbstractOpenWebService {
  ServiceInfo getInfo();
}
class Layer {
  ResourceInfo getInfo();
}

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