[gtk] (18 commits) Non-fast-forward update to branch wip/baedert/icontheme

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/icontheme' 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:

  75dc6a7... icontheme: Avoid some memory allocations
  ea9ecc5... gtkicontheme: Avoid a get_icon_flags call
  226e713... icontheme: Avoid a g_strconcat in get_icon_suffix
  14b7e2b... icontheme: Optimize icon_name_is_symbolic
  fbe438e... icontheme: Avoid some more strlen calls
  dc10166... icontheme: Remove paramter from get_icon_suffix
  3764b40... icontheme: Remove use_builtin parameter from theme_lookup_i
  21c2750... icontheme: Save the min_suffix for the min_dir
  ccf0d1d... main: Check if any debug flags are set in gtk_get_debug_fla
  a7eeee8... icontheme: Stop using GPtrArrays in choose_icon

Commits added to the branch:

  c50052e... Revert "wayland: Keep some resources until destroy" (*)
  0cd8dd4... inspector: Make updates overlay not crash (*)
  fda6439... rendernode: Remove unused function (*)
  928c85c... rendernodeparser: Parse Cairo nodes (*)
  8d1f05f... Cosmetics (*)
  a45731e... icontheme: Avoid some memory allocations
  7a09bb8... gtkicontheme: Avoid a get_icon_flags call
  b42ae3c... icontheme: Avoid a g_strconcat in get_icon_suffix
  3a55edc... icontheme: Optimize icon_name_is_symbolic
  2f1dc3e... icontheme: Avoid some more strlen calls
  ec18720... icontheme: Remove paramter from get_icon_suffix
  28165f4... icontheme: Remove use_builtin parameter from theme_lookup_i
  292cff6... icontheme: Save the min_suffix for the min_dir
  9af6430... main: Check if any debug flags are set in gtk_get_debug_fla
  00d2bc7... icontheme: Stop using GPtrArrays in choose_icon
  4f8954e... icontheme: Remove priv pointer
  aa6c707... icontheme: Stop using GLists for icon theme directories
  c0b0bc2... icontheme: Use a GPtrArray for resource paths

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