* extracted the code from psub.translate_registers for generating the name of
  the registers from a tlocation to a new function called location_reg2string
+ added support for 16-bit and 8-bit ALUs in location_reg2string



git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26275 3ad0048d-3df7-0310-abae-a5850022a9f2