Dry run fix
In the pw.x input documentation, setting the value of nstep to 0 should result in a dry run. However, nstep was being overwritten to 1 in PW/src/input.f90 and a normal calculation was taking place. This has been fixed.
In the pw.x input documentation, setting the value of nstep to 0 should result in a dry run. However, nstep was being overwritten to 1 in PW/src/input.f90 and a normal calculation was taking place. This has been fixed.