My 5.2

Hi,
A quick hack for lua 5.2
and a change to the Makefile for using it on most distro's.
I'm still wondering if it isn't better to have a split setup:
one that starts a basic lua env in bash, and a require for a bash.so from lua's perspective.

And it stil isn't completely bash 4 compliant I guess, since bash 4 understands hashes...