New input options for Berry's phase electric field.



git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11207 c92efa57-630b-4861-b058-cf58834340f0
In Berry's phase electric field added the possibility of
controlling strings phases.



git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11208 c92efa57-630b-4861-b058-cf58834340f0