placing *_ldv_psrfits_requantisation.log file to the top workdir

bf_pulp_utils/bf_pulp_utils/psrfits_requantisation.py

@@ -179,6 +179,8 @@ def main():
             # renaming new converted fitsfile to the original name
             print("Renaming %s_0001.fits to %s.fits" % (outputbase, outputbase))
             os.rename("%s_0001.fits" % (outputbase), "%s.fits" % (outputbase))
+            # copying *_ldv_psrfits_requantisation.log to the workdir
+            os.system("cp %s %s/" % (logfile, workdir))
             # adding new files to 'to_add' list and original file to 'to_delete' list
             to_add.append("%s.fits" % (outputbase))
             to_add.append(logfile)