package/lua: split hash files, add license hash for 5.3 / 5.4
The content of the license file (doc/readme.html) differs between lua 5.3
and 5.4, so we cannot use a shared .hash file for all versions.
Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
[Peter: extend commit message]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>