Replace GtkV/HBox by GtkBox

plugins/thunar-sbr/thunar-sbr-case-renamer.c

plugins/thunar-sbr/thunar-sbr-date-renamer.c

plugins/thunar-sbr/thunar-sbr-insert-renamer.c

plugins/thunar-sbr/thunar-sbr-number-renamer.c

plugins/thunar-sendto-email/main.c

thunar/thunar-chooser-dialog.c

thunar/thunar-column-editor.c

thunar/thunar-location-entry.c

thunar/thunar-permissions-chooser.c

thunar/thunar-preferences-dialog.c

thunar/thunar-progress-dialog.c

thunar/thunar-progress-view.c

thunar/thunar-properties-dialog.c

thunar/thunar-renamer-dialog.c

thunar/thunar-size-label.c

thunar/thunar-standard-view.c

thunar/thunar-window.c

thunarx/thunarx-renamer.c