[Fix #15] Fix Java 7 compatibility issue

For now, all the newly added Java 7 methods are implemented by throwing
an UnsupportedOperationException. This allows us to keep Java 6
compatibility.

See also 6b10b62ad77edcd3491d972179f0a47e08002982 which we should use
once we abandon Java 6.
Merge pull request #20 from agouge/15-2

[Fix #15] Fix Java 7 compatibility issue
Update pom, SL4J simple in unit test, remove version in assembly
Merge pull request #21 from nicolas-f/fix/pom

Update pom, SL4J simple in unit test, remove version in assembly
use release version of cts
Set CTS url
Merge pull request #22 from nicolas-f/fix/cts-version

Fix/cts version
Publish table engine as link file driver
Add shape driver to copy data through jdbc
fix shx and dbf search
Refactor dbf and shp reader
Add unit test for shp copy
Do, shape write driver
Fix shp writer
Add DBF writer and reader function
finish DBFRead DBFWrite, add unit test
Add license header, declare sql functions
Expose non-db driver functions
Finalize SHP DBF Write and Read
fix dbr writer, char type
Fix constructor of TableLocation, manage null catalog and schema