[gtk] (12 commits) Non-fast-forward update to branch wip/baedert/for-master

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/for-master' 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:

  f5d7763... examples: Add common_cflags to executables
  c0d71d8... Add G_GNUC_NORETURN to functions that never return
  dfc781f... bloatpad: Avoid a few theoretical compiler warnings

Commits added to the branch:

  028942c... Updated Spanish translation (*)
  4b655ec... examples: Add common_cflags to executables (*)
  3c7ba21... Add G_GNUC_NORETURN to functions that never return (*)
  afd5651... bloatpad: Avoid a few theoretical compiler warnings (*)
  8b7fcd8... Pass common_cflags to print backends
  420fc7f... Pass common_cflags to testuite/gsk executables
  190553e... tools: Pass common_cflags to executables
  21d4d33... reftests: Pass common_cflags
  ba34662... tetsuite/a11y: Pass common_cflags to build
  2c416bb... bloatpad: Pass common_cflags to the build
  5d54266... build: Pass common_cflags to focus-chain test
  d4cfb91... Build print backends with common_cflags

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