logilab-mtconverter #487330 use setuptools and logilab namespace package [validation pending]

with source move under a logilab/mtconverter subdirectory.

prioritynormal
typetask
done in0.9.0
load2.000
load left0.000
closed by#35c0f6eb461e [pkg] Always use setuptools (closes #487330)
patch[pkg] Always use setuptools (closes #487330) [applied]