Improved the code of the apache dbutils
The lisence is the same as apache's common dbutils, and the origin copy belongs to the apache.
my work is just improved the codes, the improvment list is as :
1, Redefined the interface of the rowprocessor. the original interface defined 4 methods ,but the improved just one, more clear.
2, Improved the implement of resultsethandler and rowprocessor, add other implements of resultsethandler such as jsonresulthandler,csvresultsethandler.
3, Classify the package. created the processor and resultsethandler package.
4, More code improvement, just see the codes.
5, come out the bugs let me known at the fist time please.