[gtk] (20 commits) ...Merge branch 'wip/baedert/test-cflags' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  d7fb33c... filechooserwidget: Avoid criticals when in recent mode (*)
  0e8850b... examples: Add common_cflags to build (*)
  d1cd6aa... tests: Add common_cflags to build (*)
  83982a2... testuite/gsk: Add common_cflags to build (*)
  b3c332a... testsuite/performance: Add common_cflags to build (*)
  79c60bb... testsuite/gdk: Add common_cflags to build (*)
  01bd791... testsuite/css: Add common_cflags to build (*)
  e759358... testsuite/a11y: Add common_cflags to build (*)
  6fcd5d5... testsuite/reftests: Add common_cflags to build (*)
  5d1e006... demos/constraint-editor: Add common_cflags to build (*)
  e444d73... demos/icon-browser: Add common_cflags to build (*)
  6f6ed1e... demos/node-editor: Add common_cflags to build (*)
  3c28f6d... demos/widget-factory: Add common_cflags to build (*)
  049f841... padcontroller: Copy action entries (*)
  dc36c21... demos/gtk-demo: Add common_cflags to build (*)
  7789d0e... builder: Make object names a const array (*)
  7553649... testsuite/gtk: Add common_cflags to build (*)
  822d672... Replace a few more fallthrough comments (*)
  73d8f6a... build: Add -Wno-typedef-redefinition to build (*)
  66a0a8d... Merge branch 'wip/baedert/test-cflags' into 'master'

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