noncolinear and spin-orbit cases. pwnc.x is no more needed and the
directory PWNC and all its files will be removed.
Step one: added to PW the noncolinear routines that have not been
merged, changes on all the Makefiles.
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@1537 c92efa57-630b-4861-b058-cf58834340f0