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This example tests pw.x and ph.x in several cases that require the
noncollinear or the spin-orbit part of the code together with the gga.
ph.x is used to calculate the phonons at X and Gamma of fcc-Pt with gga,
and to calculate the phonons at X and Gamma of fcc-Ni to test the magnetic
case with gga with or without spin-orbit.
The calculation proceeds as follows:
1) make a self-consistent calculation for fcc-Pt
(input=pt.scf.in, output=pt.scf.out).
2) make a phonon calculation at the Gamma point (input=pt.phG.in,
output=pt.phG.out).
3) make a phonon calculation at X (input=pt.phX.in, output=pt.phX.out).
4) make a self-consistent calculation for fcc-Ni in the noncollinear case
(input=ni.scf.in, output=ni.scf.out).
5) make a phonon calculation at the Gamma point (input=ni.phG.in,
output=ni.phG.out).
6) make a phonon calculation at X (input=ni.phX.in, output=ni.phX.out).
7) make a self-consistent calculation for fully relativistic fcc-Ni
(input=ni_so.scf.in, output=ni_so.scf.out).
8) make a phonon calculation at the Gamma point (input=ni_so.phG.in,
output=ni_so.phG.out).
9) make a phonon calculation at X (input=ni_so.phX.in, output=ni_so.phX.out).
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