longparas: xub_StrLen->sal_Int32

Change-Id: I171caa791e1d2a0baa4444a460a7f20ad5428571
longparas: STRING_LEN gets expanded to string len, so just use str len

Change-Id: I161a94b58c328988bfbfac2922a12d79ec83a9eb
longparas: drop 16bit string limits in meta text actions

Change-Id: I35144034f002cdaaa759a84731aae5fa48c6aa5a