[gtk] (27 commits) ...Merge branch 'im-context-work' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  bf8b974... imcontext: Code cleanup (*)
  031944a... imcontext: Stop using GTK_MAX_COMPOSE_LEN (*)
  52fb900... composetable: Fix an off-by-one (*)
  f7c4375... composetable: parse long sequences (*)
  61f7098... composetable: Warn when ignoring things (*)
  edeaf9c... imcontext: Drop GTK_MAX_COMPOSE_LEN (*)
  dbbcb13... composetable: Parser fixes (*)
  be35c46... composetable: Drop table debug code (*)
  5692940... Add tests for GtkComposeTable (*)
  9ebf3fa... composetable: Add api to check tables (*)
  aa9054a... imcontext: Use gtk_compose_table_check (*)
  c9cac5f... composetable: Add tests for matching (*)
  5d9509c... imcontext: Move code around (*)
  10fcdd8... imcontext: Code cleanup (*)
  8d18d93... composetable: Add tests for compact table matching (*)
  ef053eb... composetable: Fix algorithmic matching (*)
  ecb072f... composetable: Check algorithmic matching (*)
  af9a578... imcontext: Prepare for multi-char values (*)
  9142aa0... composetable: Prepare for multi character values (*)
  564793d... composetable: Another step towards multi-char values (*)
  773ae0c... composetable: Parse multi-char values (*)
  cebf2b2... composetable: Keep multi-char values (*)
  140c5c5... composetable: Don't use GSlice for big blobs (*)
  676f875... composetable: Support string values in the cache (*)
  814a4a7... Add tests for string values (*)
  949c783... composetable: Parse hex escapes too (*)
  e9b06b6... Merge branch 'im-context-work' into 'master'

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