Running a DFT Calculation on Hydrogen using New DFTSolver

With the new v1.6 solvers these calculations could be run via:

>>> from PyQuante import SCF, Molecule
>>> h2 = Molecule('h2',[(1,(0,0,0)),(1,(1.4,0,0))])
>>> lda = SCF(h2,method="DFT")
>>> lda.iterate()
>>> blyp = SCF(h2,method="DFT",functional="BLYP")
>>> blyp.iterate()
>>> print "DFT Results: LDA = %f  BLYP = %f" % (lda.energy,blyp.energy)