Log Message:
mate-utils: update to 1.21.1:

### mate-utils 1.21.1

  * Translations update
  * disable deprecation warnings for distcheck
  * Use make functions for HELP_LINGUAS
  * Replace -Dokumentationsprojekt with Documentation Project
  * mate-dictionary: Fix memory leak
  * Fix spelling and grammar mistakes
  * search-tool: replace deprecated gtk_menu_popup
  * screenshot: replace deprecated gdk_flush
  * dictionary: replace deprecated gdk_flush
  * dictionary: replace deprecated gtk_menu_popup
  * dictionary: Replace deprecated GtkFontButton accessors
  * disk-usage-analyzer: replace deprecated gtk_menu_popup
  * Update Catalan sceenshots of mate-dictionary
  * Add Catalan screenshots
  * add mate-dictionary help to transifex
  * add mate-system-log help to transifex
  * add mate-search-tool to transifex
  * add mate-disk-usage-analyzer to transifex
  * Baobab help: Terminal command updated to 'mate-disk-usage-analyzer'
  * baobab-chart: avoid deprecated 'gtk_style_context_set_background'
  * gsearchtool: avoid deprecated 'gtk_window_set_wmclass'

### mate-utils 1.21.0

  * Translations update
  * Add support for non-interactive screenshot directly to clipboard
  * avoid deprecated GtkStock