autoconf: Check for lua-5.1 from compat-lua-devel on Fedora

[scottdraves]

hey thanks i updated the wiki with a link to your fedora page https://github.com/scottdraves/electricsheep/wiki/Compiling

am looking to get a dev who can test/merge.

[almereyda]

From looking at the changed file, this doesn't seem to break anything.

<irony> </irony>