[gtk] (38 commits) ...Merge branch 'wip/exalm/test' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  b7bfb29... tests: Fix print-editor (*)
  edfaa5f... tests: Fix overlayscroll (*)
  0f57e6c... tests: Fix syncscroll (*)
  778d388... tests: Fix testaccel indentation (*)
  1c03745... tests: Fix testaccel layout (*)
  31e3c1e... tests: Fix testappchooser test (*)
  de5939f... tests: Fix testadjustsize test (*)
  1fd75d0... tests: Add missing margin to simple test (*)
  e162b3e... tests: Fix testcalendar layout (*)
  9efdf3c... tests: Fix testcombo (*)
  9af4a42... tests: Update testcombochange test (*)
  02b2777... tests: Fix testdialogtest (*)
  f2542e9... tests: Fix testdnd popup (*)
  466e8a7... tests: Add missing margin for testentrycompletion (*)
  b2f2b3f... tests: Fix testfilechooser test (*)
  6920fc3... tests: Fix testfontchooser layout (*)
  25295d1... tests: Fix testgiconpixbuf test (*)
  7a09143... tests: Add missing margin for testglarea (*)
  9970424... tests: Fix testgmenu (*)
  4277eee... tests: Fix testgtk (*)
  fb0dcaf... tests: Expand content for testheaderbar (*)
  68fb643... tests: Fix testheightforwidth layout (*)
  e0d36d1... tests: Fix testiconview (*)
  7aeb504... tests: Fix testlogout (*)
  7c148be... tests: Remove use-popover from testmenubutton (*)
  c9760ed... tests: Remove testmodelbutton (*)
  14dc92c... tests: Simplify testorientable (*)
  4361a88... tests: Fix testoverlay (*)
  b2da99f... tests: Fix testselectionmode (*)
  1d2af90... tests: Fix teststack "add icon" button (*)
  2940b17... tests: Fix teststackedheader (*)
  58fcd09... tests: Fix testtreeelistmodel (*)
  531468c... test: Stop using stock-size for teestverticalcells (*)
  2323e8d... tests: Remove orientation from testvolumebutton (*)
  56f56e6... tests: Connect signal properly for testvolumebutton (*)
  ea9cea9... tests: Remove redundant image from testdialog (*)
  228b3fc... tests: Stop explicitly showing widgets (*)
  9ce7b16... Merge branch 'wip/exalm/test' into 'master'

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