[glib] (6 commits) ...Merge branch 'wip/desrt/more-ghash-valgrind' into 'master'

[Philip Withnall <pwithnall src gnome org>]

Summary of changes:

  96ce920... ghash: fix bug introduced by valgrind fix (*)
  c5462cb... ghash: Improve internal documentation (*)
  b3fbf6c... ghash: do less work when destroying the table (*)
  9add93e... ghash: Be more explicit about memory in g_hash_table_destro (*)
  1150333... ghash: fix small array handling in g_hash_table_remove_all_ (*)
  32ea5b7... Merge branch 'wip/desrt/more-ghash-valgrind' into 'master'

(*) This commit already existed in another branch; no separate mail sent