liblua support v0

This PR implements support for using liblua. This can be useful for systems or architectures where luajit isn't available. Also, not all Suricata installations will be performance critical, so there convenience might trump performance. For example Debian does not come with luajit, but it does come with regular lua.

Prscript:
- PR build: https://buildbot.suricata-ids.org/builders/inliniac/builds/318
- PR pcaps: https://buildbot.suricata-ids.org/builders/inliniac-pcap/builds/233