FSAL_HPSS: Complete rework for new FSAL API
FSAL_HPSS: add support for ATTR_[AM]TIME_SERVER
FSAL_HPSS: Set cookie to 0 if not given
FSAL_HPSS: fsal openflags are different from posix ones. HPSS's are the same as posix's, so use fsal2posix for now.
FSAL_HPSS: Prefix hpss function names with hpss_
FSAL_HPSS: Allow (and ignore) setattr on SPACEUSED attribute, because nfs3 sets it along with ATTR_SIZE
FSAL_HPSS: Fix get dynamic fsinfo - still returns dummy values...
HPSS_FSAL: Fixed build after rebase - struct exportlist__ defined in a new include
FSAL_HPSS: Move main methods in the right include file