[Bug-zile] Lua Zile & its libraries

[Reuben Thomas]

I've spent today updating luaposix, lcurses & Lua stdlib. So far the
changes are unreleased. Gary, could you confirm that it all works for
you? (On my system, Lua Zile currently passes all its tests with the
newest versions of all the libraries.)

I will then make releases of lcurses & luaposix, and we'll once more
be able to depend on particular versions.

It would be nice to have configure.ac checks for these (currently we
only check for lrex, and we don't even version check that).

Another change I plan to make is to make stdlib installable, and then
that doesn't need to be in git either. Again, it should have its
version checked. We should encourage a standard way of checking
versions of Lua libraries (and that effectively checks they can be
found as well, since they have to be loaded to have their version
checked).

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