[DynInst_API:] [dyninst/dyninst] 59c79c: Fix for decoding error in register based load/stor...

[Sunny Shah <shah28@xxxxxxxx>]

  Branch: refs/heads/master
  Home:   https://github.com/dyninst/dyninst
  Commit: 59c79c6b818b02f83cd6530fff962ffa6e5f0829
      https://github.com/dyninst/dyninst/commit/59c79c6b818b02f83cd6530fff962ffa6e5f0829
  Author: Sunny Shah <shah28@xxxxxxxx>
  Date:   2016-11-04 (Fri, 04 Nov 2016)

  Changed paths:
    M instructionAPI/src/InstructionDecoder-aarch64.C

  Log Message:
  -----------
  Fix for decoding error in register based load/store instructions

The shift amount for the second source register in load/store (register)
instructions should depend only on the value of the 'S' field.