Make it build with GSEAL

plugins/thunar-sendto-email/main.c

plugins/thunar-uca/thunar-uca-chooser.c

plugins/thunar-uca/thunar-uca-editor.c

thunar/thunar-abstract-dialog.c

thunar/thunar-abstract-icon-view.c

thunar/thunar-chooser-dialog.c

thunar/thunar-clipboard-manager.c

thunar/thunar-column-editor.c

thunar/thunar-compact-view.c

thunar/thunar-create-dialog.c

thunar/thunar-details-view.c

thunar/thunar-dialogs.c

thunar/thunar-file.c

thunar/thunar-gtk-extensions.h

thunar/thunar-icon-renderer.c

thunar/thunar-icon-view.c

thunar/thunar-location-button.c

thunar/thunar-location-buttons.c

thunar/thunar-location-dialog.c

thunar/thunar-path-entry.c