[DRMAA-WG] Torque/PBS DRMAA - file transfer routines

Issue: File transfer routines are desired by many users and currently they are only limited to standard input, output and error streams. --------- Omitting file transfer capability was done on purpose in version one to put all the major DRM systems at the same footing. On of the ambitious DRMAA goals was to influence DRM system vendors or providers to standardize (one more time) the DRM systems and add missing capabilities as deemed necessary by the user community, so this is an ambitious goal - in contrast to the request. -Hrabri