Log Message:
libxkbcommon: update to 0.10.0.

libxkbcommon 0.10.0 - 2020-01-18
===================

- (security) Fix quadratic complexity in the XKB file parser. See commit
  message 7c42945e04a2107827a057245298dedc0475cc88 for details.

- Add $XDG_CONFIG_HOME/xkb to the default search path. If $XDG_CONFIG_HOME
  is not set, $HOME/.config/xkb is used. If $HOME is not set, the path is not
  added.

  The XDG path is looked up before the existing default search path $HOME/.xkb.

  Contributed by Peter Hutterer <@who-t.net>.

- Add support for include statements in XKB rules files.

  This is a step towards making local XKB customizations more tenable and
  convenient, without modifying system files.

  You can now include other rules files like this:

      ! include %S/evdev

  Two directives are supported, %H to $HOME and %S for the system-installed
  rules directory (usually /usr/share/X11/xkb/rules).

  See commit message ca033a29d2ca910fd17b1ae287cb420205bdddc8 and
  doc/rules-format.txt in the xkbcommon source code for more information.

  Contributed by Peter Hutterer <@who-t.net>.

- Downgrade "Symbol added to modifier map for multiple modifiers" log to a
  warning.

  This error message was too annoying to be shown by default. When working on
  keymaps, set `XKB_LOG_LEVEL=debug XKB_LOG_VERBOSITY=10` to see all possible
  messages.

- Support building on Windows using the meson MSVC backend.

  Contributed by Adrian Perez de Castro <@igalia.com>.

- Fix bug where the merge mode only applied to the first vmod in a
  `virtual_modifiers` statement. Given

      augment virtual_modifiers NumLock,Alt,LevelThree

  Previously it was incorrectly treated as

      augment virtual_modifiers NumLock;
      virtual_modifiers Alt;
      virtual_modifiers LevelThree;

  Now it is treated as

      augment virtual_modifiers NumLock;
      augment virtual_modifiers Alt;
      augment virtual_modifiers LevelThree;

- Reject interpret modifier predicate with more than one value. Given

      interpret ISO_Level3_Shift+AnyOf(all,extraneous) { ... };

  Previously, extraneous (and further) was ignored. Now it's rejected.

- Correctly handle capitalization of the ssharp keysym.

- Speed up and improve the internal `xkeyboard-config` tool. This tool
  compiles all layout/variant combinations in the xkeyboard-config dataset
  and reports any issues it finds.

  Contributed by Peter Hutterer <@who-t.net>.

- Speed up "atoms" (string interning). This code goes back at least to \ 
X11R1
  (released 1987).