i#1551 Port DynamoRIO to ARM: fixed a normalize_ldm_instr bug
i#1551 Port DynamoRIO to ARM: fixed a normalize_ldm_instr bug

- adjust base reg back if ldm is split and the base is not over-written

Review-URL: https://codereview.appspot.com/209510043

sigma-random/dynamorio,bl4ckic3/dynamorio,bl4ckic3/dynamorio,daksunt/dynamorio,code4bones/dynamorio,sigma-random/dynamorio,bl4ckic3/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,daksunt/dynamorio,sigma-random/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,sigma-random/dynamorio,daksunt/dynamorio,sigma-random/dynamorio,bl4ckic3/dynamorio,code4bones/dynamorio