[gtk] (22 commits) Non-fast-forward update to branch wip/otte/dnd

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/dnd' 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:

  705ce85... sizerequest: Stop clamping for_size to natural size
  2e4d273... widget: Pull margin computation out of adjust_allocation
  061b92f... widget: Simplify adjust_allocation()
  e2e9887... events: Use GdkDrop as event sequence
  88fe458... gtk: Bubble drag events like motion events
  860b17f... eventcontrollermotion: Fix docs
  93ee2c6... Add GtkDropControllerMotion
  35d2957... testsuite: Check proper notify emissions, too
  7d4e773... Port simple cases to GtkDropControllerMotion
  3262536... stackswitcher: Use GdkDropControllerMotion
  e249127... main: Don't synthesize crossing events when nothing changed

Commits added to the branch:

  418bdc8... sizerequest: Stop clamping for_size to natural size
  4128ee8... widget: Pull margin computation out of adjust_allocation
  6f73a75... widget: Simplify adjust_allocation()
  be4b34a... events: Use GdkDrop as event sequence
  fc43ec0... gtk: Bubble drag events like motion events
  9223d1e... eventcontrollermotion: Fix docs
  34e5f36... Add GtkDropControllerMotion
  2a8fd25... testsuite: Check proper notify emissions, too
  d680e2e... Port simple cases to GtkDropControllerMotion
  a5e2275... stackswitcher: Use GdkDropControllerMotion
  a12e563... main: Don't synthesize crossing events when nothing changed
  ce3ed45... surface: Inline function
  e3aee62... drop: Guard variable with correct compiler flags
  f9b7825... device: Inline function into return_if_fail()
  99fc318... comboboxtext: Inline functions into return_if_fail()
  42d71f1... combobox: Inline variables into return_if_fail()
  2e941ac... filesystemmodel: Guard variable with correct compiler flags
  eb70173... levelbar: Guard function by right compiler macros
  2cb0007... iconview: Inline variables into return_if_fail()
  0c4c88b... scrolledwindow: Inline variable into return_if_fail()
  d9e3eaa... treeview: Guard code by right compiler macros
  18d7187... testsuite: Don't use return_if_fail()