Registering common values in 5.2

[Nevin Flanagan <Alestane@...>]

One thing that occurred to me in the wake of the proposal to remove closure environments was how we go about sharing private values such as look-up tables after the change. If a table held in common between C closures should be a common upvalue, that pretty much wrecks using luaL_register as it's currently implemented, unless I'm missing something.

Any chance we could get an argument added to luaL_register, the number of values on top of the stack (possibly excluding the uppermost value if the registered name is NULL), to be attached as upvalues to ALL C functions being registered?

NFF