logilab-common #8796 support setuptools namespace packages [validation pending]

setuptoos introduce the notion of 'namespace' package allowing to have sub-parts of a same package split into several eggs (eg what's used to build proper eggs for logilab'subpackages...)

this should be understood by pylint/astng?

priorityimportant
typeenhancement
done in0.60.0
load2.000
load left0.000
closed by#878ef72bc997 [modutils] add pkgutil.extend_path support. Closes #8796, #cd9817f175b4 [modutils] setuptools pkg_resources support. Closes #8796
patch[modutils] add pkgutil.extend_path support. Closes #8796 [applied][modutils] setuptools pkg_resources support. Closes #8796 [applied]