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...