Remove dependence on cdb_make_free function…#1

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ludrao wants to merge 5 commits intoasb:masterfrom ludrao:master

+22-16

Commits on Feb 4, 2017

Remove dependence on cdb_make_free function (which was not public) as cdb_make_finish calls it anyway
cbugot-swi
committed
fix a bug where the environment was not actually set for the cdb userdata object
cbugot-swi
committed

Commits on Feb 8, 2017

add overwrite flag to cdb.make() api
cbugot-swi
committed

Commits on Mar 17, 2017

upgrade to Lua 5.2

folays
authored and
cbugot-swi
committed

Commits on Mar 27, 2017

fixed double free prb
ludrao
committed