[gedit] (23 commits) Non-fast-forward update to branch wip/loader-saver

[Sébastien Wilmet <swilmet src gnome org>]

The branch 'wip/loader-saver' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  5ee3c07... Use GtkSourceEncoding in GeditEncoding
  3b77f20... Move encoding utils functions to gedit-utils
  84239e2... encodings-dialog: use GtkSourceEncoding
  6f4ea87... encodings-combo-box: use GtkSourceEncoding
  590e77e... app: use GtkSourceEncoding
  7ce5a7e... io-error-info-bar: use GtkSourceEncoding
  70c683b... commands: use GtkSourceEncoding
  de7aaac... window: use GtkSourceEncoding
  59cfc46... file-chooser-dialog: use GtkSourceEncoding
  b9a0f1a... tab: use GtkSourceEncoding
  989bcb4... Add gedit_document_get_file()
  7821976... Port GeditDocument and GeditTab to GtkSourceFile (not finis

Commits added to the branch:

  cfefa08... GeditDocument: remove comments explaining standard GObject  (*)
  5c951d2... GeditDocument: remove useless #include's (*)
  f8d3c6e... GeditDocument: remove dead code (*)
  44af852... GeditDocument: save_metadata() static function (*)
  73b1b2d... GeditDocument: remove dispose_has_run attribute (*)
  b74b826... GeditDocument: get_language_metadata() static function (*)
  d0b24e4... GeditDocument: simplify code of guess_language() (*)
  e51d042... GeditDocument: #define for a string used at several places (*)
  2674408... GeditDocument: inline set_content_type() (*)
  061fa98... GeditDocument: small clean-up (*)
  b5f2673... Use GtkSourceEncoding in GeditEncoding
  7398705... Move encoding utils functions to gedit-utils
  831ba37... encodings-dialog: use GtkSourceEncoding
  d9c3603... encodings-combo-box: use GtkSourceEncoding
  fbb6999... app: use GtkSourceEncoding
  a18b1f3... io-error-info-bar: use GtkSourceEncoding
  3de95b8... commands: use GtkSourceEncoding
  3dbbcc7... window: use GtkSourceEncoding
  021ecfc... file-chooser-dialog: use GtkSourceEncoding
  f810ea7... tab: use GtkSourceEncoding
  449988f... Add gedit_document_get_file()
  0c6512c... Remove file loading and saving unit tests
  0a5c46d... GeditDocument: make load and save functions private

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