geanyctags: Add mnemonics for two labels and allow more translation

Add mnemonics to two labels in the Find Tag dialog that already have
a mnemonic widget but no actual mnemonics.

Also, fix the match type labels to be translatable.

geanyctags/src/geanyctags.c

@@ -525,7 +525,7 @@ static void create_dialog_find_file(void)
 
 	size_group = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);
 
-	label = gtk_label_new(_("Search for:"));
+	label = gtk_label_new_with_mnemonic(_("_Search for:"));
 	gtk_misc_set_alignment(GTK_MISC(label), 0, 0.5);
 	gtk_size_group_add_widget(size_group, label);
 
@@ -543,14 +543,14 @@ static void create_dialog_find_file(void)
 	gtk_box_pack_start(GTK_BOX(ebox), s_ft_dialog.combo, TRUE, TRUE, 0);
 	gtk_box_pack_start(GTK_BOX(vbox), ebox, TRUE, FALSE, 0);
 
-	label = gtk_label_new(_("Match type:"));
+	label = gtk_label_new_with_mnemonic(_("_Match type:"));
 	gtk_misc_set_alignment(GTK_MISC(label), 0, 0.5);
 	gtk_size_group_add_widget(size_group, label);
 
 	s_ft_dialog.combo_match = gtk_combo_box_text_new();
-	gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(s_ft_dialog.combo_match), "exact");
-	gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(s_ft_dialog.combo_match), "prefix");
-	gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(s_ft_dialog.combo_match), "pattern");
+	gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(s_ft_dialog.combo_match), _("exact"));
+	gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(s_ft_dialog.combo_match), _("prefix"));
+	gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(s_ft_dialog.combo_match), _("pattern"));
 	gtk_combo_box_set_active(GTK_COMBO_BOX(s_ft_dialog.combo_match), 1);
 	gtk_label_set_mnemonic_widget(GTK_LABEL(label), s_ft_dialog.combo_match);