Add missing ChangeLog entries...

Add missing ChangeLog entries...

... for the following commits:

2013-05-07  Joel Brobecker  <brobecker@adacore.com>

       * rs6000-nat.c (rs6000_core_ldinfo): Remove '\n' at end of
       error message (ARI fix).

2013-05-07  Joel Brobecker  <brobecker@adacore.com>

       * features/library-list-aix.dtd: Replace library-list by
       library-list-aix.
       * rs6000-nat.c: Replace library-list by library-list-aix
       throughout.
       * solib-aix.c: Likewise.

2013-05-07  Joel Brobecker  <brobecker@adacore.com>

       * target.h (enum target_object) [TARGET_OBJECT_LIBRARIES_AIX]:
       Renames TARGET_OBJECT_AIX_LIBRARIES.
       * rs6000-nat.c: Replace TARGET_OBJECT_AIX_LIBRARIES with
       TARGET_OBJECT_LIBRARIES_AIX throughout.
       * solib-aix.c: Likwise.

There were added, but accidently not checked in.