[gtk] (19 commits) ...Merge branch 'wip/compose-parser' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  74cba6c... Add a simple Javascript example (*)
  da3ca66... gtk-demo: Add a slider to the menu example (*)
  d25557a... Clean up the GtkComposeTable api (*)
  bee58fd... composetable: Introduce a parser struct (*)
  8464b04... composetable: Move code into the parser (*)
  fb6c8cd... composetable: Handle includes (*)
  ff4f07d... composetable: Handle substitutions in includes (*)
  3b4b1c6... composetable: Reinterpret %L (*)
  45d39c2... composetable: Switch to using a hash table (*)
  485dc05... composetable: Allow removing sequences (*)
  8087250... imcontext: Replace the builtin sequences (*)
  1cff4bb... composetable: Ignore length 1 sequences (*)
  54dffa0... composetable: Drop GtkComposeTableCompact (*)
  92129a2... imcontext: Simplify checking compose seqs (*)
  4390f81... imcontext: Improve the docs (*)
  0ad5094... Remove some leftover debug code (*)
  264d592... composetable: Keep the number of sequences (*)
  87e2a02... composetable: Rewrite Compose files if necessary (*)
  5c4aba4... Merge branch 'wip/compose-parser' into 'master'

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