ffi: use a new C library namespace when the dynamic library load #57
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If symbols from the dynamic library are loaded into the
global namespace (ffi.C), by invoke ffi.load() with global
is true and without save the return value, it may be
garbage collected. For correct work the return value
must be saved.
Example - tarantool/tarantool#4999
So, use a new C library namespace instead the global one.
This will help to keep the global namespace clean and
avoid the problem with garbage collection.