quantum-espresso/examples/example35

This example tests pw.x and ph.x for the effective charges and
dielectric constants with the noncollinear or the spin-orbit part of the 
code.

The calculation proceeds as follows:

1) make a self-consistent calculation for Si 
   (input=si.scf.in, output=si.scf.out).

2) make a phonon calculation at the Gamma point (input=si.phG.in,
   output=si.phG.out).

3) make a self-consistent calculation for C
   (input=c.scf.in, output=c.scf.out).

4) make a phonon calculation at the Gamma point (input=c.phG.in,
   output=c.phG.out).