chore: import upstream snapshot with attribution

postgresql/delete_users.cgi

@@ -0,0 +1,17 @@
+#!/usr/local/bin/perl
+# Delete multiple PostgreSQL users
+
+require './postgresql-lib.pl';
+&ReadParse();
+$access{'users'} || &error($text{'user_ecannot'});
+&error_setup($text{'user_derr'});
+@d = split(/\0/, $in{'d'});
+@d || &error($text{'user_enone'});
+
+$main::disable_postgresql_escaping = 1;
+foreach $u (@d) {
+	&execute_sql_logged($config{'basedb'}, "drop user \"$u\"");
+	}
+&webmin_log("delete", "users", scalar(@d));
+&redirect("list_users.cgi");
+