updated histf1 (correct first bin bug; added rightBoundary arg);
added analytical derivative to parncpF.lbfgsb.*; 
added fitted, dncp, combFint methods to SSPA::SampleSize class.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pi0@353 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
added and debugged hypergeometric1F1.R

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pi0@354 edb9625f-4e0d-4859-8d74-9fd3b1da38cb