add rtc and add option to specify NRout and NZout in eqdsk, set -1,-1 to get original LIUQE nb of points (nrz_out parameter)

git-svn-id: https://spcsvn.epfl.ch/repos/TCV/gdat/trunk@6677 d63d8f72-b253-0410-a779-e742ad2e26cf