[parrot/parrot] 585121: fix and optimize bswap

[GitHub]

  Branch: refs/heads/native_pbc2
  Home:   https://github.com/parrot/parrot
  Commit: 58512139f0f68168c522e1a20a0551badb372070
      https://github.com/parrot/parrot/commit/58512139f0f68168c522e1a20a0551badb372070
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2012-09-09 (Sun, 09 Sep 2012)

  Changed paths:
    M include/parrot/bswap.h
    M include/parrot/packfile.h
    M src/packfile/pf_items.c

  Log Message:
  -----------
  fix and optimize bswap

Also allow FLOATTYPE_16PPC, but this format seems to be double-double, not __float128