Remove obsolete FSAL_DIGEST_SIZEOF

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Consolidate code into FSAL/commonlib.c

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Remove unused MAX_3 replace MAX_2 with system defined MAX

There is no need to litter our code with redundant definitions.

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Consolidate posix2fsal_error into FSAL/fsal_convert.c

Each FSAL had it's own copy of this function, all doing the same
conversions except for a few error code ommitted from some FSAL's
versions.

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Eliminate duplicate fsal2posix_openflags in FSAL_PT

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Consolidate posix2fsal_attributes into FSAL/fsal_convert.c

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Eliminate FSAL_GPFS and FSAL_PT copies of fsal_convert.h

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>
Move some declatations from fsal.h to fsal_convert.h

Signed-off-by: Frank S. Filz <ffilzlnx@mindspring.com>