Log message

Fix overall error code for nnet confusion matrix with binomial target
For nnet wiht binomial target convert to factor to build model
Correct message when testing correlation - null hypothesis was stated wrongly
For explore boxplot ensure the rs variable is included in the log

	Modify	/trunk/Makefile	diff
	Modify	/trunk/changes.html.in	diff
	Modify	/trunk/package/pmml/DESCRIPTION	diff
	Modify	/trunk/src/data.R	diff
	Modify	/trunk/src/evaluate.R	diff
	Modify	/trunk/src/explore.R	diff
	Modify	/trunk/src/nnet.R	diff
	Modify	/trunk/src/rattle.R	diff
	Modify	/trunk/src/rpart.R	diff
	Modify	/trunk/src/test.R	diff