Updated mediawiki/extensions
Project: mediawiki/extensions/Scribunto  0a8a07de2f1ab56efa6181d95787d7c942e00198
null
Fix package.loaded and other cleanups

The listing of the standard modules in package.loaded seems to have been
removed to avoid leaking information to loaded modules. However, since
the *entire* environment is cloned, *including* package.loaded itself,
this does not seem to actually be a problem. But for good measure, also
add a unit test to verify that the version of the standard module tables
referenced from package.loaded is the same as that in _G.

This change also cleans up some unused local variables and an unused
local function from the package module.

Change-Id: I7ec8227b3273059e8f65ad735c215bfd0c623e64