checkstyle module compiles and runs w/ nb 5.0

Checkstyle module builds and runs w/ nb 5.0!
(As far as I could see it was not possible to compile).

Build structure refactored to use the netbeans-module-commons-logging module correctly. 
See the README file.
Also now provides "automatic fixes" for whitespace needed/not-needed,
final keyword needed, and unused import checkstyle violations.

Feedback on building and using the module would be appreciated... :-)

I wouldn't consider it stable or suitable for any update center until you
can change the checkstyle.xml to use checkstyle against via a GUI in
netbeans. Currently you must compile the module with the checkstyle.xml
file in the external directory. urggh...

mck.