This routine implements the dual method of Goldfarb and Idnani
(1982, 1983) for solving quadratic programming problems of the form
min(?dT b + 1/2bT Db) with the constraints AT b >= b0.
WWW: http://cran.r-project.org/web/packages/quadprog/
PR: ports/172298 (based on)
Submitted by: David Naylor <naylor.b.david_AT_gmail_DOT_com>