Log Message:
mate-power-manager: update to 1.26.0

Change log:

### mate-power-manager 1.26.0

  * Translations update
  * update copyright to 2021
  * applets: Do not build the path to the menu files
  * build: Use PACKAGE_URL variable
  * update resource for transifex
  * Update copyright to 2021
  * Remove warning -Wunused-but-set-variable
  * update issue template
  * gpm-backlight: Fix the position of the inline keyword
  * mate-power-preferences: add option to enable keyboard dimming
  * Switch default from libgnome-keyring to libsecret
  * gpm-control.c: Add libsecret implementation to gpm_control_hibernate()
  * gpm-control.c: Add libsecret implementation to gpm_control_suspend()
  * Add autotools support for libsecret
  * brightness applet: Prevent sliding from bogging down the UI
  * Install action and status icons to right location
  * Remove trailing spaces/tabs
  * gpm-kbd-backlight: Remove unused functions
  * Remove unused variable from gpm_notebook_scroll_event_cb

### mate-power-manager 1.25.0

  * Translations update
  * Add git.mk to generate .gitignore
  * gpm-kbd-backlight: do not change keyboard back-light, when disabled
  * build: silent build warnings for distcheck
  * build: do not override the default value for MATE_COMPILE_WARNINGS
  * gpm-phone: silent "not connected" message unless debug
  * Remove unused entry from autostart
  * gpm-brightness: silent "using cache for value" message unless debug
  * Remove warning: ���GTimeVal��� is deprecated
  * gpm-backlight: silent "no dimming hardware" message unless debug
  * gpm-control: warning when a property cannot be set using dbus
  * glib-genmarshal: replace deprecated tokens NONE and BOOL
  * Remove warning function declaration isn���t a prototype
  * Port from EggDebug to the built-in GLib logging framework
  * gpm-manager: Remove dereference of a null pointer warning
  * Remove warning use of memory after it is freed
  * Rewrite gpm-prefs.ui from scratch
  * Remove warnings: unused variable
  * Read authors (updated) from mate-power-manager.about
  * Use gtk_show_about_dialog to show about dialog
  * Remove the CPU wakeups feature
  * Update copyright year on about dialog
  * generate missing gpm-* PNGs from new SVGs
  * add missing gpm-phone SVGs
  * add missing gpm-keboard SVGs
  * add missing gpm-mouse SVGs