[pango/harfbuzz-ng-external] (28 commits) ...Update to HarfBuzz API changes

[Behdad Esfahbod <behdad src gnome org>]

Summary of changes:

  152e0aa... Bug 626966 - SIGFPE _hb_sanitize_array (*)
  47ba8cf... Bug 628497 - Crash in pango_layout_line_get_extents at pang (*)
  837f1ba... Fix docs build on Ubuntu (*)
  ce7af56... Doc template changes (*)
  1f32ac0... Bug 630812 - Ignore gnome-doc-utils, .dirstamp and GSetting (*)
  14b387a... configure.in: Add missing ; (*)
  457f5eb... introspection: Use --include-uninstalled (*)
  bcad3f2... introspection: Fix some annotation syntax usage (*)
  c06264a... Use autoreconf instead gnome-autogen.sh (*)
  807c776... Use G_DEFINE_BOXED_TYPE. (*)
  588847f... ensure gnome-autogen.sh's behaviour (*)
  d4a36df... [git.mk] Support Mallard docs (*)
  4da05d6... Annotate pango_layout_get_context(). (*)
  34448ab... Bug 636348 - Hex boxes are incorrectly scaled with non iden (*)
  a7a0db3... [GI] Annotate out arguments of pango_parse_markup(). (*)
  12de1ec... [GI] Add (allow-none) annotations to pango_parse_markup(). (*)
  4e6248d... Bug 639882 - Heap corruption in font parsing with FreeType2 (*)
  729352c... [gi] add out annotations to pango layout API (*)
  ec69005... build: gtk-doc scanner links agains glib (*)
  6b52243... Handle realloc failure in the buffer (*)
  6b1910a... Bug 646213 - Hangul Jamo render as U+00xx boxes and produce (*)
  08fd5cf... Bug 646213 - Hangul Jamo render as U+00xx boxes and produce (*)
  dff1f2b... Adjust to hb_buffer_clear() removal
  9ac5bce... Merge branch 'master' into harfbuzz-ng-external
  94ceb98... More hb_buffer_clear() removal
  a4edc44... Always call hb_ot_layout_position_finish()
  09b3b27... [HB] Adjust to removal of hb_buffer_clear_positions()
  315d5c9... Update to HarfBuzz API changes

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