[empathy] (10 commits) ...Merge branch 'clickable-link'

[Xavier Claessens <xclaesse src gnome org>]

Summary of changes:

  f48b89c... Move empathy_string_parser API to its own file
  e99f234... Move empathy_uri_regex_dup_singleton to be private inside e
  4f990cd... Reorganize code in empathy-ui-utils.ch to group related cod
  3e4bea3... Make empathy_string_replace_link and empathy_string_replace
  2e9c6f7... New function empathy_add_link_markup() to be used with gtk_
  00ab069... Make links clickable in presence message and topics
  1c9ef08... Remove unused function empathy_toggle_button_set_state_quie
  207c3bd... Also make links clickable in tooltip
  7c9a7e0... Add a comment explaining what does empathy_add_link_markup,
  56872bd... Merge branch 'clickable-link'