Branch b1_6

b=13497
i=deen
i=johann

Description: LASSERT_{REQ,REP}SWAB macros are buggy
Details    : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
             LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
             these macros and replace them with their difinitions instead.