MFH: r424620

lang/lua53: Add new MAINTAINER, Add bug fix patches

The Lua team maintains a list of bugs found in each release of Lua since
4.0 [1] with examples that show the bug and a patch when the fix is
available.

This patch adds all three bug fixes available so far. A fourth bug fix
should be made available soon to fix a recently-found bug in coroutines.

To make it easier to track changes for each patch, a GitHub repository
[2] has been created with the Lua distribution and patches so they can
be referenced by commit id.

• Pass MAINTAINER'ship to Submitter, who is also a member of the NetBSD Lua team. (Thanks!)

[1] https://www.lua.org/bugs.html
[2] https://github.com/salazar/lua

PR: 213658
Submitted by: Guilherme Salazar <gmesalazar gmail com>

Approved by: ports-secteam (blanket)