Review b10cba0e0af5b1e3e8cda0201d5563f085aab2a4 and 7a16f4582da2b854a0adcba445bf6f8d750b2919:
* lib/groupio.c (merge_group_entries): Do not allocate more than
necessary (sizeof char* instead of char).
Thanks for Tomáš Mráz (alioth#313962)
* lib/groupio.c (merge_group_entries): Document that new_members
is correctly NULL terminated. (alioth:#313940)
Align previous ChangeLog entries.