MPI parallel for spin OK, test passed.
hx0kf_sc q-point and spin parallel.

delete useless debug lines
lx0_para_option = "" (default)

We have checked
make gas_gwsc, nio_gwsc,si_gwsc
for
mpirun -np 4 hx0kf_sc -nq 4 -ns 1 (4 q point parallel)
mpirun -np 4 hx0kf_sc -nq 2 -ns 2 (4 q point parallel, 2 spin parallel）

Caution!
mpi_size = NQ * NS  should be satisfied (stop with error messeage).
If ns > nspin, it also stops.

----
If you like to run O2 where we use one q point, and spin=2,
Maximum setting is
>mpirun -np 2 hx0kf_sc -nq 1 -ns 2

add missing MPI_fpgw2.F, delete mpi_abort in sxcf_fal2.F, add MPI_fpgw2.F in fpgw/exec/makefile.
omp parallel in x0kf_v4h.F, iw loop parallel in symmetrization.
correction in message in ../gwsrc/x0kf_v4h.F
change default in ../gwsrc/cputid.F, timediff()
procedure for modifed x0kf_v4h in hx0fp0.m.F
add procedure for nmbas==1 .and. symmetrize in x0kf_v4h.F
openmp in fpgw/gwsrc/sxcf_fal2.sc.F
make gwall PASSED.
add omp in fpgw/gwsrc/ppbafp.fal.F
modify fpgw/exec/make.inc.ifort_maro_kino
make gwall PASSED
minor fix.
minor fix gwsc
real-time cputid.F by H.Kino
comment out EPS0inv writing in hx0fp0.sc.m.F
a bug fix
write WV.d only by mpi__root

delete checksum write
CommentOut EXsp parts (test codes for exchange energy spectrum).
mpi version of cpuid is added.