wip/lua-ldoc 1.4.6 NetBSD

LDoc is a software documentation tool which automatically generates API documentation out of source code comments (doc comments). It is mainly targeted at Lua and documenting Lua APIs, but it can also parse C with according doc comments for documenting Lua modules implemented in C.

It is mostly compatible with LuaDoc, except that certain workarounds are no longer needed. For instance, it is not so married to the idea that Lua modules should be defined using the module function; this is not only a matter of taste since this has been deprecated in Lua 5.2.