scossu/lsup_rdf: C and Python RDF library. ALPHA @ 15c8029475a8bbb384e15e9eb8a24f04b319db59

Stefano Cossu 15c8029475 Fix bad allocation and free on repr.		hai 1 ano
..
lsup_rdf	6b11b4252c Various improvements:	%!s(int64=3) %!d(string=hai) anos
py_graph.h	e8ab4e9767 Some adjustments:	hai 1 ano
py_lsup_rdf.c	93d65c46ac Use separate Makefile for codecs.	%!s(int64=2) %!d(string=hai) anos
py_namespace.h	01b3950720 Fix Python library; remove redundant dependencies.	%!s(int64=2) %!d(string=hai) anos
py_term.h	15c8029475 Fix bad allocation and free on repr.	hai 1 ano
py_triple.h	f76189d122 Assign correct term sub-types.	hai 1 ano