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
TEST/VERIFY - issue CCH-5: reformat NJ shapefile to meet new standard 
https://internal.cida.usgs.gov/jira/browse/CCH-5

Re-apply changes, with fix for System properties side effects, and
expected failure of testWriteReadBiggerNumbers
Re-introduce checks for data overflow, with fix for System properties
side effects, and expected failure of testWriteReadBiggerNumbers test.

Overflow check is disabled by default. It is enabled by setting system
property "org.geotools.shapefile.reportFieldSizeErrors" to TRUE.
Merge branch 'master' of https://github.com/rhayes-cida/geotools.git
GEOT-4530: allow 1D encoding for LineString
GEOT-4531: Borehole 1D support
geosciml 3.2 schemas
GEOT-4531: app-schema changes to allow 1D LineString with ToLineStringFunction.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Correct DB2 headers
Merge pull request #243 from riniangreani/1D

Changes required to support 1D boreholes.
Fix build failure relating to ToLineString.