3.5 -> 3.6

1) Added fully-relativisitc psps -- needed significant modifications
which resulted in many routines needed changing

2) Restored most if not all of the support for separate command line
action (>>opium al log ae ; >>opium al log ps ; etc..) which had been
lost in previous releases.

3) Implemented QuantumESPRESSO's upf version 1 psp output.  Version
2 is in progress.

4) Added DNL modifications from Ben Truscott

5) Added Flexib corrections submitted by Keith Refson