lua5.3: package Lua 5.3 version

lua5.3: package Lua 5.3 version

This package provides an interpreter and compiler for Lua 5.3.5. It has
been decided to use separated package due to a backward incompatibility
of Lua 5.2 and 5.3.

This package/version:
1) Does not include lnum patch as its author didn't decide to port it to
   the new version.
2) Does not provide shared library as the old patch doesn't apply
   anymore. It can be added later if needed.
3) Does not come with examples package as tests were dropped by upstream
   developers.

That said there is definitely a room for improvement and any further
work is highly appreciated. It works however and can be safely pushed as
a basic/early package release.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>