Added support for ExtededData (XDATA).

All the data described in http://www.autodesk.com/techpubs/autocad/acad2000/dxf/index.htm are parsed and the 1002 block goes to a list of attributes.
The SimpleFeature returns a Map with the parsed data and with a list with 1002 attributes
Create readme

Initial readme
Update formatting
changes to support hsqldb upgrade to 2.2.8
removing alias from script
bumping EPSG database version
bumping EPSG database version
update jdom version to 1.1.3
GeoTIffIIOMetadataDecoder has been provided under MIT license
Correct MIT License
SOSNOKILLLICENSE was a misunderstanding of authors name
fix license summary
Correct header reference to JTS Envelope

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
Restore original header from Dennis M. Sosnoski

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
GeoTools has now joined OSGeo

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
correct authors name

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>

Conflicts:
	modules/unsupported/postgis-versioned/src/main/java/org/geotools/data/postgis/attributeio/Base64.java
Fix header on Justins original work to correctly cite LGPL license. Keeping OGC © to credit method names from filter 2.0 spec

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
GEOT-4567: String constants in idExpression causes error
Testing graphic margin with sld 1.0 too
[GEOT-4568] Multi threaded http client claims to support gzip encoding in the request headers, but fails to handle them in the response
More tests for the graphic margin vendor param
[GEOT-4569] PolygonExtractionProcess default value prevents usage of process as a rendering transformation
[GEOT-4573]: JTS utility methods for better footprint management