[Wish] Make string WRONG_ORDER_ENDPOINTS_MESSAGE public

[Ole Ersoy]

Hi,

I'm overriding cumulativeProbability and inverseCumulativeProbability on 
AbstractIntegerDistribution, and was wondering whether the OUT_OF_RANGE_POINT 
and WRONG_ORDER_ENDPOINTS_MESSAGE strings could be made public, such that the 
sub classes can have consistent exception messages?  Let me know if I should 
file a ticket.

TIA,
- Ole