update versions in readme, remove dead link
update library sizes in readme
clean up build script
disable incorrect test
adapt a test to Lua 5.2
work around some changes in Lua 5.2
adapt a test to Lua 5.2

--HG--
extra : amend_source : 0eb370186663bf6652a0e375a624fede470a4719
Py3 test fix
support Lua 5.2
changelog