[gnome-contacts] (29 commits) ...Update to C implementation of egg-list-box

[Alexander Larsson <alexl src gnome org>]

Summary of changes:

  360e782... add get_child_at_y () public method
  6adf9cb... fix style of focus()
  f43820e... focus: cope with cursor_child being null
  99d9f29... Depend on Vala 0.16.1
  15eab59... add API to (un)highlight a widget during DnD
  fa76492... auto-scroll during DnD
  58eafe8... Avoid warning when calling static method via instance
  597d06b... Convert EggListBox from vala to C
  560d510... Bunch of formating changes
  25f3110... Clean up signal handling
  54f10e9... Put ChildFlags stuff where used and simplify
  e92003b... Clean up the Block1Data thing
  20f2da6... Reorder init/fini to start of file
  fd82ab2... clean up sort callback
  a4b2100... Some formating cleanup
  3e0618d... cleanup class_init
  94bc8fc... base -> container rename
  65c2f68... base -> widget where appropriate
  99946ee... self -> list_box
  dcb2a47... Use priv locals
  8f18180... whitespace cleanups
  66dd594... Cleanup child visibility changes
  771297a... Rename custom marshaller
  92c1a13... Include the right header
  bac0e23... Remove ref/unref helpers
  27076eb... Add child_is_visible helper
  2199bbb... More coding style fixes
  ce28bb7... Fix vapi file to not we don't have a construct function any
  343c5a9... Update to C implementation of egg-list-box