Sources here are from lua-5.2.3 (http://www.lua.org/ftp/lua-5.2.3.tar.gz)
All applicable official lua.org patches, as of 17-Feb-15, have been applied.
That is patches 2 and 3.

Not entire lua distribution directory hierarchy is included here, and
some files needed for Freeciv usage have been added.
Changes applied to included lua source files are included in freeciv_lua.patch
