Mahout-1539-computation of gaussian kernel between 2 arrays of shapes

[Saikat Kanjilal]

Dmitry et al,As part of the above JIRA I need to calculate the gaussian kernel 
between 2 shapes, I looked through mahout-math-scala and didnt see anything to 
do this, any objections to me adding some code under scalabindings to do this?
Thanks in advance.