[parrot/parrot] 9240d3: [gc] add MEMORY_DEBUG support to the GMS gc

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/parrot/parrot
  Commit: 9240d3a60083aac90ccf8fc83cab8a84cfbe73b8
      https://github.com/parrot/parrot/commit/9240d3a60083aac90ccf8fc83cab8a84cfbe73b8
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2014-06-09 (Mon, 09 Jun 2014)

  Changed paths:
    M config/gen/makefiles/root.in
    M src/gc/gc_gms.c

  Log Message:
  -----------
  [gc] add MEMORY_DEBUG support to the GMS gc

fix and enable -DMEMORY_DEBUG for the GMS gc,
add DETAIL_MEMORY_DEBUG lines for all sanity checked PMCs,
and add a single MEMORY_DEBUG line when write_barrier'ing a PMC

we never caught up with the change from the List_Item_Header iterator
to POINTER_ARRAY_ITER.